We eat our sit down meal for lunch...this can significantly reduce the cost of our bill. Entrees/buffets are less expensive during lunch time and we really love the air-conditioned sit down service as a mid day break. For dinner, Trail's End buffet is the least expensive buffet and Liberty Tree Tavern has some inexpensive sandwiches on their lunch menu. As a matter of fact, even Le Cellier has some sandwiches that are around $15 for lunch. Take a look at the menus online and you might be surprised at the cost of lunch entrees. While not cheap (by normal standards), they are reasonably priced for WDW.