I'm 20 he's 27, I need some advice!!!

So I just turned 20 at the end of July and just recently I met this really nice 27-year-old guy he's way different from the other guys I've dated and finally I've met someone who wants to take me out and have fun with me he's really sweet and genuine and I like him a lot... the only problem is I'm 20 -__- where can we go to have fun? Other than dinner and maybe a movie I feel like such a kid and I feel bad that we can't go to cool places or the clubs because I'm still underage :-/ anyone lives in California what are some fun things to do??