I had an amazing experience here. The runs were fun (the first and third were longer, the last was the shortest) and the guides are extremely funny and friendly. Very entertaining and such great fun. It's nice to get away from the glitz and glamor of The Strip once in a while and get in some nature.
It's true, the ride up to the mountain is probably scarier than the actual ziplines. Don't sit on the left side of the bus, those tires get DANGEROUSLY close to the edge.
You do have to hike up to the first run carrying your own 10lb. trolley. If you aren't able to do it they will happily carry it for you, but help those guys out. I'm overweight and out of shape and was grateful that they stopped 2 - 3 times for everyone so I was able to catch my breath and stop panting (and at least I didn't hold anyone up or was last and I carried my own pack). There's also a bunch of steps you'll have to walk up between runs 2 and 3 and I'm glad my sister carried my pack for me there.
The runs are fun. You don't get that stomach drop feeling on any of them. WEAR SUNGLASSES!!! You end up going pretty fast on some of them and the wind would have dried out my contacts quick and I wouldn't have been able to enjoy the views.
The guides are hilarious and friendly. They do great work. Tip them well. I loved my experience with Flightlinez and recommend it to everyone.