I DID do the Potato Head thing at DTD when we were there for spring break. What fun! I stuffed and stuffed 30 pieces of Disney Potato head paraphanalia into that little box! It was starting to rip! LOL!
Also, if you make a potato head on the computers at the station and print it out, there is a fun "find it" quiz on the back. If you complete it and take it to the purple castle in the back of the store you get a nice prize! DS5 loved this! Me too