I think there's a concert or something going on tomorrow or saturday night in the main plaza. But aside from parking you don't have to pay to get in. The theaters are great if you want to see a movie (well, duh), Jillians is a good place to get a drink and do some mad bowling. The Marvel restaurant is pretty subpar so don't go there. Aside from that, you should just walk around and have fun. BTW, the chinese restaurant across from the Hard Rock is AWESOME.