MK:
Crystal Palace breakfast!! I would start my morning off every day at this place if I could. The food selection and taste was soooo good!!!
Epcot:
You will likely see alot of Le Cellier votes on here, but my vote goes to the Biergarten. It's so fun here-band, theming, servers, and even though I detest anything sausage-related, I found plenty of yummy food options.
DHS:
We love 50's Prime Time! Huge portions, great comfort food (my fav is the grilled chicken dinner), SMORES!!!, the decor is so neat to look at and the tvs are fun, and of course the servers are hilarious!
DAK:
NONE. But, you are a 5 minute bus ride away from BOMA, which IMHO, has the best food anywhere in WDW. I have to eat very light during the day when I have Boma dinner reservations because I could eat seconds and thirds on the desserts alone!
HTH!!