I would have a Toy Story restaurant and put it in DLR. DLR is sadly lacking in fun themed places. I hear about fun sounding places at WDW like Prime Time and Sci-Fi. We have Blue Bayou which is wonderful to sit in but the food quality hasn't kept up with the prices.
Anyway, I'd take out Goofy's Sky School in DCA and stick it there. That's still a very uninspired ride anyway. It could look like you are walking into Barbie's dream house. The tables and chairs would look like plastic toy dollhouse furniture. There would be some fake plastic food stuck to the middle of each table. Pictures of placemats and silverware would be stuck on the table. Oh, and plastic flowers around too.
There would even be a fake tv with a picture glued on it and the wall paper would have pictures of shelves on it just like in a child's dollhouse. If you looked out a window you would see a giant bedroom scene as if you were in a child's bedroom. Of course it would be a character meal. The servers would dress like Barbie and Ken dolls- some sort of outfit that looked like a doll's even if they didn't all look like Barbie and Ken. Everyone would get a small plastic Toy Story figurine with their meal. They would be in sealed plastic bags and it would be a mystery which one each person got.
Not sure what kind of food would be served but it better be good. Probably American but don't know what.