Definitely the best place to be on a Saturday night!!! The fact that our group of girls got up to the front of the line and walked in to the club, excellente! So I definitely recommend getting some connections/promoters before you go to XS because waiting in that huge ass line SUCKS. Or just buying a table if your pockets are feelin' pretty deep that night.
The place can get crowded on the dance floor but the outside area is GORGEOUS and still can dance near the dance floor. The pool is awesome, you can dip your feet in if you want to. Always a great crowd though, because everyone and their moms go to XS on Saturday nights. I absolutely LOVE THE MUSIC here, it's hiphop/house mixes and will leave your ears ringing and some songs stuck in your head the next day.
But I feel really bad for guys who have to buy drinks cause it definitely is not cheap. I think its around $14/shot. Ouch on your wallets.
I would go back just to go party at XS. Agree that it is the BEST CLUB IN VEGAS!