We love Sunday shows because we can have a light meal, appetizers and a beverage or two before the 6pm show at one of the many restaurants across the train tracks. Kentro is yummy as is El Amerikano, best spicy margarita :-)
Right across the railroad tracks is Downtown Fullerton. Many fabulous restaurants within walking distance. We ate at the Greek place, left my car parked in that lot then just walked over the bridge to the theater. So convenient.