At MK...we usually have Crystal Palace for breakfast and Liberty Tree Tavern for lunch. We usually don't eat in the MK. A great new option though, is the Wave. We have eaten there for dinner and it is fantastic. I believe they also do breakfast and lunch. It is a short walk over (most of the time quicker to walk than to take the monorail.
At DHS...We usually don't eat in there either. 50's primetime when we do.
You also have a quick option there, the restaurants at the Dolphin, Picabo has wonderful burgers and home style cooking for lunch/dinner. Breakfast there is just ok, but the Swan has a good breakfast buffet. Dinners at Swan/Dolphin also give you great options, everthing I mentioned above, plus Blue Zoo or IL Mulino.
With any of those choices you should have some great meals. Not all those restaurants are on dining plan if you are doing that.