Bring two things: your ticket and a valid, government-issued photo ID.
Age. Hardwater events are 21+ or 18+ depending on the show, and most are 21+. The age requirement is listed on the event page, and security checks IDs at the door, so make sure everyone in your group meets it before you travel.
ID. Bring a current, government-issued photo ID. Lost or expired? See what to do if you've lost your ID before you head out.
Ticket. Your QR code and mobile pass are in My Events in your Hardwater account, see Finding your tickets. Have it ready on your phone as you reach the gate.
Security check. Everyone passes through a security check on the way in, including a bag check. Hardwater uses a clear-bag policy, and the specifics can vary by venue, so check What you can bring before you pack.
Doors and set times are posted on the event page closer to the date.