The Sunshine Season Food Fair in the Land Pavilion is a food-court type set up with counters serving a wide variety of "normal" food - sandwiches, salads, fruit, etc. Electric Umbrella has burgers, pizza, and sandwiches. If they'll eat fish, the counter service in United Kingdom is very good. And if they eat tacos, my guys really liked the ones at the counter service in Mexico. Liberty Inn in America has burgers and chicken strips, although they're not as good as some of the other places, IMHO.
Hope that helps!