I've been up here twice - first time I had a Total Rewards coupon which helped for the $15 night fee, and it was great because we got up there just before all the lights on the strip casinos turned on and the Bellagio fountains started up. \n\nSecond time was during the day, it was $10 and I still think it's a decent value because you can pretty much stay up there as long as you like and it's got a great view.\n\nHowever - DO NOT GO if you are afraid of heights.  Both times I've gone with people who claimed they were okay with glass elevators and enclosed balconies, but they were literally crying by the time we got to the top.  I'm not even that scared of heights and the ascent was a little freaky.  Save yourself $10 if you're not comfortable going up 46 stories in a glass elevator.