This was GREAT! $40 buys you a ticket to the very top. This is called the Zoomline versus the Zipline that costs $22 and starts half way up.
The difference is:
Zipline: normal zipline (sitting down) and you travel down half of Fremont street starting at half way up SlotZilla.
Zoomline: Lay flat on your belly and travel superman style down ALL of Fremont street starting from the very top of SlotZilla.
There is no question....spend the extra money to travel the 20 second or so long flight. You feel like you are flying over the crowds of people walking before. Awesome feeling.
I know people are complaining about the wait...but you are in Vegas...what did you expect? To set expectations, prepare for 30-40 minute wait from climbing the stairs, to setting off on your flight.