We did DD adoption celebration last trip and she got the celebrating button and you can order any kind of cake you want. We made a big deal of being there on her adoption day and ate at 1900 park fare..not a huge fan but she liked it and they had anyone celebrating something stand on their seats.
We went to the Coral Reef. They printed a menu with a picture and a message we supplied. They also sat us in front of the tank and had a diver swim over to our table with a congratulations sign. PM me if you have any questions.