In Epcot, since I am italian I recommend Italy. The bread is made fresh, and the pasta is beyond words. It's fantastic.
In MGM-Studios, if you like the 50's look the Prime Time Cafe -I must warn you the waitress' act like your aunt and when you order something with veggies, hide it or eat it because they will get on your case about it. My fiance didn't eat his, they came back with a small plate, whip cream overflowing the plate with sprinkles. After a large dip into the whip cream carefully lined up were the veggies he did not eat. I wrapped them in a napkin and crunched it, the waitress was so happy he had 'eaten' them she gave us a free kids cup with a glowing ice cube.-
Also in MGM is the Brown Derby. Very Very nice resturaunt, not the cheapest but gives a little 1920's-1960's Wealth look. We had the fantasmic dinner package with it. It's $36 per person 3 course meals, somewhat of a small but delicious selection. I recommend the chicken for picky eaters. It's Chicken with buttered rice, and some golden dates. A little bit of seasoning on the side you can pick out. Make sure your hungry it's a Full small chicken.
Downtown Disney-Animal Kingdom: The rainforest cafe is well known, and I must say the selections are wonderful. Kids friendly, Animated jungle animals and "thunder storms". The BBQ is amaizing, they have something for everyone. If your a Vegitarian, or a meat lover something for all. Incase you have a bit of a wait there is a lovely gift shop with a talking tree, and a bar.