I have to agree, that food at WDW is high, but not too bad, as you get large portions, and it is definitely comparable in price to other entertainment establishments that serve food, and the quality is usually much better!
We never eat sit down at MK... we usually eat at Pecos Bills or Cosmic Rays.
At MGM, we like 50's Primetime, but if you go to Mama Melrose, you can split a salad and a flatbread pizza for a very reasonable price!
At AK, there are no sitdown restaurants, but Tusker House is very good!
At Epcot, we just try to eat our big meals at lunch, when the prices are a bit lower... some of our favorites are Le Cellier, Tempura Kiku, and San Angel Inn.
Go to
www.wdwig.com and look at the menus so you can plan your budget.