Best after-hours spot I've ever been too. There is a line but I think everywhere in Vegas has a line when your not a local or ballin out of control. Its Vegas people, everyone is here to party.
Riding the elevator down to what feels like the basement is pretty awesome and it sets a certain mood upon entering the spot. I didn't really see any spectacular lights but the music was good, loud, clear and I was able to move around and dance freely.
I left and the sun came up as I was walking back to my resort. It was amazing and I will return every time I go to Vegas.