Where to go in O.C for the 4th of July?

My boyfriend and I are moving to Orange County tomorrow. We don't know anyone and we would like to find something to do.. I have looked on the internet and almost everything I have found talks about picnics with family and kid stuff.. we are 25,27 and have no children so.. at night time we could just go to the beach and watch fireworks, but during the day I'm sure my boyfriend wants to drink and what not.. If anyone could give me suggestions..I would appreciate it. Thanks.