You can contact them and they will send the waiver form template in email. Else you can do it on site just before the thrill starts. It takes less than 5 min.
If you don't get it all done beforehand you can do it on site on their tabs
We all met and signed it on one person's phone. But I think there is a way to send a link to them. But if you don't sign it online, they let you sign it at the place. It's just quicker if you sign it on your phone. When you walk in they ask you if you've all signed the waiver, and if not they will you have you do it before you start.
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