I purchased the sunrise ballon ride off of Groupon. Once we checked in they loaded us in a van to take us where the balloons were located. We were allowed to help with the assembly of the ballon. We didn't ride over the strip, but the view was breathtaking. The landing was a bit ruff and the basket tipped on its side, but we weren't in any real danger. We ended the ride with a champagne toast.
This was a wonderful experience and I recommend it as a must do in Vegas!