I have not been yet, but the Wave at the contemporary is American-inspired and looks like a nice menu. I haven't seen it talked about on here, but I'd check that one out and see if it fits the bill. The pictures look great and the desserts are all trios!
We're also trying Chefs de France for dinner, and will likely order the from 3-course prix fixe menu (a nice way to get 3 courses on the regular dining plan, also available at Le Cellier lunch and a few other places that I've read about here but can't recall.)
Liberty Tree Tavern in MK is a great American lunch (it's only a buffet at dinner).