If you are a guest of the hotel, you get free, VIP access! Way cool! We got our stamps early then came back later when it was banging and got whizzed in through the re-entry area.
There were many flights of stairs to climb to get to the venue. Not sure what that was about, but when I asked if there was a lift was told to use the stairs. They must have an elevator, but maybe just for disabled?
Anyways, once we climbed for what seemed like a long time, we got inside the club and it was lit! We danced our way to the middle and just let loose Vegas style! Lot's of fun! Be sure to check out the pool area too. Different music and different vibe outside.
Heard about another room called The Library, but it was closed for the night. Would want to take a look if I were to go again.
Must check out Marquee if you are staying at Cosmopolitan!