My husband is the same way. Well, in that case, all they do is the server yells ketchup and everyone in the restaurant that has a bottle of ketchup delivers it to your table so you end up with about 15 bottles of ketchup. It's usually the kids that deliver them. It was really harmless. And pretty soon some other unsuspecting person asks for ketchup and it goes on.
Well, the character meals I've been too haven't been embarrassing at all. Garden Grill was especially nice. We had a booth on the outer ring. The restaurant revolves very slowly. Chip, Dale, Mickey, and Pluto come to the table one at a time and pose for a picture and then they move on to the next table. I suppose you could ask them a yes/no question if you wanted. Maybe ask Mickey if he grew all the veggies being served. He comes out in his farming coveralls.
We went to breakfast at Crystal Palace last time. It was pretty calm too. They had us fill our plates and explained the characters would come to our table one at a time for photos.
The one thing my husband will never do again is that comedy theater in Magic Kingdom. I forget the name of it now. He did not get picked on. But now that he knows they talk to people in the audience, he doesn't want to go back in. It was a cute show.
He is very comfortable with 50's Primetime though. Those servers are funny! I think the worst thing that ever happened there was they got after him for putting his elbows on the table.
Have fun on your trip!