3rd time in Vegas and I was determined to finally see Fremont Street. When I found out there was ziplining I was sold, and prebooked my tickets online. PRO TIP - probably nighttime ziplining would be a little better, but I had fun regardless.
Checked in 10 minutes before "flight time" and got our wrist bands and went up the stairs when our time was called.
And then we waited. And waited. I'm a patient person, but waiting for an hour in 115F can be a bit much. Probably over an hour from our "time" to when we actually took off. I'd totally do it again, but boy, that was a long wait.
We selected the higher zipline, because the "flying" aspect was different and I wanted to try it. I was a little scared before going, but it was great when we were actually on and I really loved it.
Other than the waiting, other bad thing is the pictures. The camera is right at the end, so your pictures don't end up being actual "flying shots" but more "hanging there waiting to be taken down shots". I still paid the $40 to get them all electronically.