Peter A. recommended me to the zip lines on Fremont Street as a 'must do' while in Vegas for Christmas. So what did I do Christmas Day? I flew over Fremont street 5 stories high!
The Flightlines did not disappoint! It was fun, interesting, and an adrenaline rush! We went at night so it was $20, but worth it for the experience! The line moved quickly after you signed your life away on their release form. They weight you (I mean everyone no matter how you look) and hold you to their 250lbs. weight limit. They ask if you want to buy a t-shirt (I did not). Then you take an elevator 5 stories up and get in line to fly. The line moves quick and they take 4 at a time. We had a group of four so it worked great. But, if it's just a single rider you could jump the line to fill a group of three up.
You feel really secure on the line and are strapped in tight. I had no fear of falling, surprisingly.
Time flies when you're flying so, try and take in all the scenery and senses.
They take your photo pretty close to landing (I didn't know this). So, make all you sweet action faces as you approach the landing! You can look at them and purchase them after the ride.
Don't be scared when you zip in to land. Those guys actually do catch you!
I'll second Peter A. and say this is a must do' in Vegas!