Our DS6 and DS15 enjoyed the Ohana Best Friends Breakfast with Mickey, Pluto, Lilo and Stitch. If you have time for a breakfast, on or off the plan, we'd recommend it. It's all you can eat, but they bring the food to your table -- skillets filled with scrambled eggs, bacon, link sausage, potatoes and mickey waffles. Kids love it and characters spend a lot of time with you, at least they did on the day we went.
Also: Flame Tree BBQ (AK) and Pecos Bills (MK) for counter service; Hollywood and Vine and Crystal Palace, both buffets, had plenty both kids would eat and they both enjoyed Le Cellier (a really nice steakhouse, but not too ritzy for children). It was my DS15's favorite meal.
Have fun
Carmen