Cloud Nine - the balloon ride attraction near Mandalay Bay has closed again, and this time it looks to be permanent. Cloud Nine opened about a year ago and operated for about six months before it was forced to close because of damage caused by high winds. The attraction recently re-opened but apparently didn't draw enough interest to continue operations.
From the Cloud Nine website:
"The Cloud Nine Balloon Ride in Las Vegas has closed is no longer in operation. We want to thank the thousands of customers who had the opportunity to fly with us over the skies of Las Vegas. We bid you a fond farewell."
The balloon was an interesting concept, but there were many pitfalls surrounding the project. High wind days made for an uncomfortable ride, if they were even able to take off at all. The cost and location also might have been drawbacks. In the end I think most people prefer to take in a view of the Strip from a high floor in an enclosed building.