diff --git a/app/Http/Controllers/Apis/Protected/Main/OAuth2MembersApiController.php b/app/Http/Controllers/Apis/Protected/Main/OAuth2MembersApiController.php
index 297026e9..cd5f2228 100644
--- a/app/Http/Controllers/Apis/Protected/Main/OAuth2MembersApiController.php
+++ b/app/Http/Controllers/Apis/Protected/Main/OAuth2MembersApiController.php
@@ -254,5 +254,34 @@ final class OAuth2MembersApiController extends OAuth2ProtectedController
         }
     }
 
+    /**
+     * @param $member_id
+     * @param $rsvp_id
+     * @return mixed
+     */
+    public function deleteRSVP($member_id, $rsvp_id){
+        try{
+
+            $member = $this->repository->getById($member_id);
+            if(is_null($member)) return $this->error404();
+
+            $this->member_service->deleteRSVP($member, $rsvp_id);
+
+            return $this->deleted();
+        }
+        catch (ValidationException $ex1) {
+            Log::warning($ex1);
+            return $this->error412(array($ex1->getMessage()));
+        }
+        catch(EntityNotFoundException $ex2)
+        {
+            Log::warning($ex2);
+            return $this->error404(array('message'=> $ex2->getMessage()));
+        }
+        catch (Exception $ex) {
+            Log::error($ex);
+            return $this->error500($ex);
+        }
+    }
 
 }
\ No newline at end of file
diff --git a/app/Http/Controllers/Apis/Protected/Summit/OAuth2SummitAttendeesApiController.php b/app/Http/Controllers/Apis/Protected/Summit/OAuth2SummitAttendeesApiController.php
index 04a9c4d6..4cf0dcab 100644
--- a/app/Http/Controllers/Apis/Protected/Summit/OAuth2SummitAttendeesApiController.php
+++ b/app/Http/Controllers/Apis/Protected/Summit/OAuth2SummitAttendeesApiController.php
@@ -153,7 +153,13 @@ final class OAuth2SummitAttendeesApiController extends OAuth2ProtectedController
                 (
                     $attendee,
                     SerializerRegistry::SerializerType_Private
-                )->serialize($expand));
+                )->serialize
+                (
+                    $expand,
+                    [],
+                    [],
+                    [ 'serializer_type' => SerializerRegistry::SerializerType_Private ]
+                ));
         }
         catch (\HTTP401UnauthorizedException $ex1) {
             Log::warning($ex1);
diff --git a/app/Http/routes.php b/app/Http/routes.php
index df0643a6..71c9e077 100644
--- a/app/Http/routes.php
+++ b/app/Http/routes.php
@@ -108,6 +108,12 @@ Route::group([
                     Route::delete('', [ 'middleware' => 'auth.user:administrators|summit-front-end-administrators', 'uses' => 'OAuth2MembersApiController@deleteAffiliation']);
                 });
             });
+
+            Route::group(array('prefix' => 'rsvp'), function () {
+                Route::group(['prefix' => '{rsvp_id}'], function () {
+                    Route::delete('', [ 'middleware' => 'auth.user:administrators|summit-front-end-administrators', 'uses' => 'OAuth2MembersApiController@deleteRSVP']);
+                });
+            });
         });
     });
 
diff --git a/app/ModelSerializers/OwnMemberSerializer.php b/app/ModelSerializers/OwnMemberSerializer.php
index 4a8c4d67..edabf704 100644
--- a/app/ModelSerializers/OwnMemberSerializer.php
+++ b/app/ModelSerializers/OwnMemberSerializer.php
@@ -43,6 +43,7 @@ final class OwnMemberSerializer extends AbstractMemberSerializer
         'favorite_summit_events',
         'feedback',
         'schedule_summit_events',
+        'rsvp',
     ];
 
     private static $expand_group_events = [
@@ -172,6 +173,18 @@ final class OwnMemberSerializer extends AbstractMemberSerializer
                         $values['schedule_summit_events'] = $schedule;
                     }
                     break;
+                    case 'rsvp':{
+                        if(!in_array('rsvp', $relations)) break;
+                        if(is_null($summit)) break;
+                        $rsvps = [];
+                        foreach ($member->getRsvpBySummit($summit) as $rsvp){
+                            $rsvps[] = SerializerRegistry::getInstance()
+                                ->getSerializer($rsvp)
+                                ->serialize($expand);
+                        }
+                        $values['rsvp'] = $rsvps;
+                    }
+                    break;
                 }
             }
         }
diff --git a/app/ModelSerializers/SerializerRegistry.php b/app/ModelSerializers/SerializerRegistry.php
index d225336b..c55e212c 100644
--- a/app/ModelSerializers/SerializerRegistry.php
+++ b/app/ModelSerializers/SerializerRegistry.php
@@ -106,6 +106,7 @@ final class SerializerRegistry
                 self::SerializerType_Private =>  AdminPresentationSpeakerSerializer::class
             ];
 
+        $this->registry['RSVP']                       = RSVPSerializer::class;
         $this->registry['SpeakerExpertise']           = SpeakerExpertiseSerializer::class;
         $this->registry['SpeakerLanguage']            = SpeakerLanguageSerializer::class;
         $this->registry['SpeakerTravelPreference']    = SpeakerTravelPreferenceSerializer::class;
diff --git a/app/ModelSerializers/Summit/RSVPSerializer.php b/app/ModelSerializers/Summit/RSVPSerializer.php
new file mode 100644
index 00000000..1291d720
--- /dev/null
+++ b/app/ModelSerializers/Summit/RSVPSerializer.php
@@ -0,0 +1,27 @@
+<?php namespace ModelSerializers;
+/**
+ * Copyright 2018 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+/**
+ * Class RSVPSerializer
+ * @package ModelSerializers
+ */
+final class RSVPSerializer extends SilverStripeSerializer
+{
+    protected static $array_mappings = array
+    (
+        'OwnerId'   => 'owner_id:json_int',
+        'EventId'   => 'event_id:json_int',
+        'SeatType'  => 'seat_type:json_string',
+        'Created'   => 'created:datetime_epoch',
+    );
+}
\ No newline at end of file
diff --git a/app/ModelSerializers/Summit/SummitAttendeeSerializer.php b/app/ModelSerializers/Summit/SummitAttendeeSerializer.php
index 76812d0d..506b1778 100644
--- a/app/ModelSerializers/Summit/SummitAttendeeSerializer.php
+++ b/app/ModelSerializers/Summit/SummitAttendeeSerializer.php
@@ -112,7 +112,13 @@ final class SummitAttendeeSerializer extends SilverStripeSerializer
                         if($attendee->hasMember())
                         {
                             unset($values['member_id']);
-                            $values['member']    = SerializerRegistry::getInstance()->getSerializer($attendee->getMember(), $serializer_type)->serialize($expand);
+                            $values['member']    = SerializerRegistry::getInstance()
+                                ->getSerializer($attendee->getMember(), $serializer_type)
+                                ->serialize(
+                                    $expand,
+                                    [],
+                                    [],
+                                    ['summit' => $attendee->getSummit()]);
                         }
                     }
                     break;
diff --git a/app/Models/Foundation/Main/Member.php b/app/Models/Foundation/Main/Member.php
index 0f52ded2..196e7494 100644
--- a/app/Models/Foundation/Main/Member.php
+++ b/app/Models/Foundation/Main/Member.php
@@ -924,6 +924,26 @@ SQL;
         return count($rsvp) > 0 ? $rsvp[0] : null;
     }
 
+    /**
+     * @param Summit $summit
+     * @return null|RSVP[]
+     */
+    public function getRsvpBySummit(Summit $summit){
+        $builder = $this->createQueryBuilder();
+        $res     = $builder
+            ->select('r')
+            ->from('models\summit\RSVP','r')
+            ->join('r.owner','o')
+            ->join('r.event','e')
+            ->join('e.summit','s')
+            ->where('o.id = :owner_id and s.id = :summit_id')
+            ->setParameter('owner_id', $this->getId())
+            ->setParameter('summit_id',  $summit->getId())
+            ->getQuery()->getResult();
+
+        return $res;
+    }
+
     /**
      * @param Summit $summit
      * @return SummitMemberSchedule[]
@@ -1016,4 +1036,26 @@ SQL;
         $this->affiliations->removeElement($affiliation);
         return $this;
     }
+
+    /**
+     * @param int $rsvp_id
+     * @return RSVP|null
+     */
+    public function getRsvpById($rsvp_id){
+        $criteria = Criteria::create();
+        $criteria->where(Criteria::expr()->eq('id', $rsvp_id));
+
+        $rsvp = $this->rsvp->matching($criteria)->first();
+
+        return $rsvp ? $rsvp : null;
+    }
+
+    /**
+     * @param RSVP $rsvp
+     * @return $this
+     */
+    public function removeRsvp(RSVP $rsvp){
+        $this->rsvp->removeElement($rsvp);
+        return $this;
+    }
 }
\ No newline at end of file
diff --git a/app/Models/Foundation/Summit/Events/RSVP.php b/app/Models/Foundation/Summit/Events/RSVP.php
index 4ad3112a..dc6a25e3 100644
--- a/app/Models/Foundation/Summit/Events/RSVP.php
+++ b/app/Models/Foundation/Summit/Events/RSVP.php
@@ -40,6 +40,25 @@ class RSVP extends SilverstripeBaseModel
      */
     private $owner;
 
+    /**
+     * @ORM\ManyToOne(targetEntity="models\summit\SummitEvent", inversedBy="rsvp", fetch="LAZY")
+     * @ORM\JoinColumn(name="EventID", referencedColumnName="ID")
+     * @var SummitEvent
+     */
+    private $event;
+
+
+    /**
+     * @ORM\Column(name="SeatType", type="string")
+     */
+    protected $seat_type;
+
+    /**
+     * @ORM\OneToMany(targetEntity="models\summit\RSVPAnswer", mappedBy="rsvp", cascade={"persist", "remove"})
+     * @var RSVPAnswer[]
+     */
+    protected $answers;
+
     /**
      * @return ArrayCollection
      */
@@ -71,12 +90,6 @@ class RSVP extends SilverstripeBaseModel
         $this->owner = $owner;
     }
 
-    /**
-     * @ORM\ManyToOne(targetEntity="models\summit\SummitEvent", inversedBy="rsvp", fetch="LAZY")
-     * @ORM\JoinColumn(name="EventID", referencedColumnName="ID")
-     * @var SummitEvent
-     */
-    private $event;
 
     /**
      * @return SummitEvent
@@ -125,9 +138,19 @@ class RSVP extends SilverstripeBaseModel
     }
 
     /**
-     * @ORM\OneToMany(targetEntity="models\summit\RSVPAnswer", mappedBy="rsvp", cascade={"persist", "remove"})
-     * @var RSVPAnswer[]
+     * @return mixed
      */
-    protected $answers;
+    public function getSeatType()
+    {
+        return $this->seat_type;
+    }
+
+    /**
+     * @param mixed $seat_type
+     */
+    public function setSeatType($seat_type)
+    {
+        $this->seat_type = $seat_type;
+    }
 
 }
\ No newline at end of file
diff --git a/app/Services/Model/IMemberService.php b/app/Services/Model/IMemberService.php
index 925351a8..a2117acd 100644
--- a/app/Services/Model/IMemberService.php
+++ b/app/Services/Model/IMemberService.php
@@ -29,8 +29,15 @@ interface IMemberService
 
     /**
      * @param Member $member
-     * @param $affiliation_id
+     * @param int $affiliation_id
      * @return void
      */
     public function deleteAffiliation(Member $member, $affiliation_id);
+
+    /**
+     * @param Member $member
+     * @param int $rsvp_id
+     * @return void
+     */
+    public function deleteRSVP(Member $member, $rsvp_id);
 }
\ No newline at end of file
diff --git a/app/Services/Model/MemberService.php b/app/Services/Model/MemberService.php
index 2fbbf8c8..df02e83b 100644
--- a/app/Services/Model/MemberService.php
+++ b/app/Services/Model/MemberService.php
@@ -111,4 +111,20 @@ final class MemberService implements IMemberService
             $member->removeAffiliation($affiliation);
         });
     }
+
+    /**
+     * @param Member $member
+     * @param int $rsvp_id
+     * @return void
+     */
+    public function deleteRSVP(Member $member, $rsvp_id)
+    {
+        return $this->tx_service->transaction(function() use($member, $rsvp_id){
+            $affiliation = $member->getRsvpById($rsvp_id);
+            if(is_null($affiliation))
+                throw new EntityNotFoundException(sprintf("rsvp id %s does not belongs to member id %s", $rsvp_id, $member->getId()));
+
+            $member->removeAffiliation($affiliation);
+        });
+    }
 }
\ No newline at end of file
diff --git a/database/seeds/ApiEndpointsSeeder.php b/database/seeds/ApiEndpointsSeeder.php
index 0bba9446..98b18158 100644
--- a/database/seeds/ApiEndpointsSeeder.php
+++ b/database/seeds/ApiEndpointsSeeder.php
@@ -693,7 +693,15 @@ class ApiEndpointsSeeder extends Seeder
                     'scopes'      => [
                         sprintf(SummitScopes::WriteMemberData, $current_realm)
                     ],
-               ]
+               ],
+               [
+                    'name'        => 'delete-member-rsvp',
+                    'route'       => '/api/v1/members/{member_id}/rsvp/{rsvp_id}',
+                    'http_method' => 'DELETE',
+                    'scopes'      => [
+                        sprintf(SummitScopes::WriteMemberData, $current_realm)
+                    ],
+                ]
             ]
         );
     }
diff --git a/tests/OAuth2AttendeesApiTest.php b/tests/OAuth2AttendeesApiTest.php
index a6ee2968..facac495 100644
--- a/tests/OAuth2AttendeesApiTest.php
+++ b/tests/OAuth2AttendeesApiTest.php
@@ -23,7 +23,7 @@ class OAuth2AttendeesApiTest extends ProtectedApiTest
             'per_page' => 10,
             'order'    => '+id',
             'filter'   => 'email=@jimmy',
-            'expand'   => 'member,schedule'
+            'expand'   => 'member,schedule,rsvp'
         ];
 
         $headers = [
@@ -74,12 +74,12 @@ class OAuth2AttendeesApiTest extends ProtectedApiTest
         $this->assertTrue(!is_null($attendee));
     }
 
-    public function testGetAttendeeByID($attendee_id = 12642){
+    public function testGetAttendeeByID($attendee_id = 12923){
 
         $params = [
             'id'          => 23,
             'attendee_id' => $attendee_id,
-            'expand'      => 'member,schedule,tickets,affiliations,groups'
+            'expand'      => 'member,schedule,tickets,affiliations,groups,rsvp'
         ];
 
         $headers = [