Everyone already listed all my favorites. I LOVE the CS place in Mexico but they are closed for remodeling. I always got the Plato de Combinacion and a Margarita from the booth just outside. (I got the margarita first). Looking forward to their opening, a great place to sit with a drink and nachos to watch Illuminations.
Sunshine Seasons is a can't miss with the family because there is something for everyone. I usually get the chicken or salmon from the grill but my family likes other things and here we don't have to go all over for their favorites.
Peco's Bills has a great toppings bar. Your plain old burger is like a deluxe by the time you add the mushrooms, melted cheese, lettuce and tomato, pickles and grilled onions. No better burger.
Earl of Sandwich used to be one of my favorites but I can't eat bread anymore and their sandwiches are all about the bread. But don't pass it up, it is fantastic.
the QS in Morocco has great 1/2 chicken with some tasty sides. Definately a meal to share.
If you have a car try the QS at Coronado Springs. It is a little more pricy but again, many choices for everyone. they have Italian, Grill, Chinese, and a deli among others. Also, you are seated and your drinks are brought with free refills, but you have to leave a tip.