Everyone needs to sign a waiver in order to play. If you're 18 or older, you can do it at the arena. If you're under 18, you need a parent to sign your waiver, too. If your parent is dropping you off, just have them come in with you. If you're getting a ride with a friend, you'll need to print out a waiver and have a parent sign it before you come.
Once signed, your waiver is valid for one year. Yay for less paperwork!
Waivers cannot be signed by anyone other than your parent/guardian.