Restaurants in Orange County are typically more casual than in L.A. You'll rarely see men in jackets and ties. Of course, there's also a swath of super casual places along the beachfronts -- fish-taco takeout, taquerias, burger joints -- that won't mind if you wear flip-flops. Reservations are recommended for the nicest restaurants. Many places don't serve past 11 PM, and locals tend to eat early. Remember that according to California law, smoking is prohibited in all enclosed areas.