A great way to save money is to have lunch at a sit down restaurant rather then dinner. The menu is basically the same but has lower prices.
Here are some suggestions:
Full Service
LTT - lunch, Kona, Boatwrights, Beaches & Cream, GF Cafe, ESPN Club
CS
Roaring Forks, POR Foodcourt (the best), Tangerine Cafe, Earl of Sandwich, Cookes
Definitely check out the menus that should help alot.