To be very honest, I've always found the entire park's selection to be very expensive. If you're looking to save a bit, CityWalk may be a good alternative. Simply have your hand stamped at the gate and head on over to CityFood on the second floor. You can find a variety of fast-food options that are slightly cheaper than the park's own in-house dining.
If you want to stay in the park, I've always found International Cafe to relatively fair - but not by much.