We try the Ultimate Abyss
Photo: We try the Ultimate Abyss / John Roberts

The Details

The ride is complimentary and the minimum height requirement is 44 inches. You can't take loose items, like bags, cell phones, glasses, necklaces, or cameras (unless they are GoPro-style devices with a secure chest harness). 

While you don't need to sign a waiver to ride, you will be warned to keep your elbows in tight. I met people who suffered a few bumps, bruises, and road rash during their adventures. Just follow the instructions, though, and you'll have a blast.