Can you walk in, or do you have to schedule a time?

You can call ahead or walk in to make appointment

Groupon has a great price for tickets. If you use it though, make sure you download the app for it. And you can do the waiver online at Defy.

https://defy.com/waiver/ You will need to have this waiver filled out before you will be allowed to jump

You can just come in and pay in person, yes