Hershey park- things to do teenager-wise?

I'm going to hershey park (pa) with my family and I'm bringing my friend. We're going to the park and then spending the night in a hotel there. I was wondering if there were any fun things to do for teenagers (17) around the park, preferably in. I've already looked at the events calender and there is a show, but we looking for something more fun. Do they have specials or anything in general at night?