So I bought a groupon for my husband and I to do this..... We came here the other night while in Vegas on vacation and the dam hotel was so hot and smokey we walked as fast as we could through it to get to the VOODOO biplane area. We went in, gave them the groupon, got our ticket and went to the 51st floor where it opened to a bar where theres NO seating and super smokey and hot. Mind you this was at 10pm at night and it was about 100 degrees outside and about 100 inside with clouds of smoke! It was so bad we couldn't even breathe! I think the AC was broken or something..... We couldn't take it or wait till our name was called so we just left and ate the money we had already paid..... so we never got to zipline so I can't comment on that but the process was just to much!