Activities in Avalon, Catalina Island?

Me and my gf are going there for our 2 year anniversary. My boss is giving us a ride in his plane. Ive been there once when i was younger, and my boss says its kind of a romantic place. This year im on a low budget, i just wanted to know some things we can do for about 5 hours without spending a lot of money besides the beach. Maybe some ideas on a place to eat or where to get nices views of the island