Mimi's Cafe, Millie's, Pizza Hut (Fairfield Inn), McDonald's, Quiznos, Captain Kidd's (MANY on the boards highly recommend to stay away from that one) - Denny's, Tony Roma's, Ihop (very expensive compared to others in the chain, even when kids eat free) and the Hojo's gift shop has quite a lot of food on premises for snacks. You can also put in an order to Vons for free grocery delivery using EASY7 code I believe, for orders over $50.
You can sign up for Mimi's and for Denny's online a couple of weeks before your trip to get some good deals sent your way. Mimi's I believe does accept the presentation of an AAA card (CAA in Canada) for a 10% discount. Also - Getawaytoday used to offer some coupons and I believe the Tony Roma's free onion loaf is in that one, with min. purchase.
The only time I went inside to try it, I saw a cockroack skitter across a tray of scrambled eggs. Walked out and went to Denny's. My sister went to Disneyland last year, and I gave her this same warning. Her friends went to Captain Kidd's anyway, saying, nah, we won't get sick from eating there.