We love dinner at Cinderella's! I mean, it's amazing and in the castle, you can't get much better than that!
I highly recommend Crystal Palace for breakfast, you get to meet Pooh and the gang and the food is delicious! My favorite is it get an 8am breakfast so you can get in before the park officially opens!
As for DHS, the food isn't great there, I prefer hopping over to Beaches and Cream and Beach Club for lunch, but if I'm eating there I'd probably choose 50's prime time!
In AK, I HIGHLY recommend Tusker House, you get the fab five gang, and some regular buffet items, but then a ton of dishes with "African flair" to them and it's delicious!! Sometimes the interaction is kinda lacking but it's delicious!! I suggest lunch here the most, and dinner has no characters FYI!