allears.net has the menus for the restaurants (TS and CS) in DL, DCA, the on site hotels, and DTD. Look them over to see what interests you. Most of the menus are recent and others are recent enough to give you a basic idea of what the restaurant offers.
Without knowing your preferences and tastes, here are some of our favorites:
TS:
Breakfast at S55, CC, La Brea Bakery
Lunch (burger!) at CCR -- a lovely break from the heat and bustle of the park, CO, BB, CC
Dinner at CCR, NR (lounge or dining room), S55, BB, CO, Jazz Kitchen (fun people watching from the balcony), Uva Bar
CS:
Plaza Inn, Jolly Holiday Bakery, Bengal BBQ (Safari Skewers!), RDZ, Red Rose Tavern, Little Red Wagon, French Market, Harbor Galley, FF&P, Paradise Garden Grill, Pacific Wharf -- Boudin Bakery, Ghirardelli's (does this count?)