Hi Bethann,
When our sons were younger, these were some of their favorite restaurants (and still are!) because of the theming and interactions.
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Whispering Canyon Cafe at the Wilderness Lodge (and so beautiful in December & lots of surprises)
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Coral Reef at Epcot - an entire wall is an aquarium, so you can dine with Crush!
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Biergarten at Epcot - the dance floor is always filled with little ones
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Sci-Fi Dine-In Theater at Disney's Hollywood Studios - sit in old cars and watch campy movies from the 1950s
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Ohana at the Polynesian - ever push a coconut with a broom?
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T-Rex (Downtown Disney) or
Rainforest Cafe (Animal Kingdom & Downtown Disney)
And I have to add, my sons make it a MUST to have a snack at Casey's Corner at the Magic Kingdom; they love sitting in the bleachers watching old cartoons!
In addition to the links, I think there are Youtube videos taken at each of the restaurants if that helps you to get an idea of the "action."
Wishing you fantastic dining!