Nothing less of amazing! Definitely a unique Vegas experience compared to other boring activities on the Strip. One of the best zip-lining experience for bf & I to date. You have to hike a little just FYI so wear comfortable shoes. Bring a sweater because it gets pretty chilly for the speed you pick up zip-lining down. We got picked up from Excalibur & the ride was about 45 mins. Friendly & great service from everyone in the company.
Note: don't freak out and use the brake unless they advise you to do so. There were a few people in our group that freaked out and used their brakes... they ended up stuck on the zip-line and had to get pulled in.