Reddit, I turn 18 exactly one week from today. What should I do during my last week before adulthood?

I've just been wondering if there's anything that I might regret missing out on in the next week. I'd like to spend this week doing things I might never have the opportunity to do again.

So far, all I have planned is going to the second night of Not So Silent Night (really excited!).

Also, what was the best thing you did to celebrate your 18th birthday? I'm sure there's some crazy stories out there!

Thanks!