Went here for my birthday. Honestly was incredibly nervous due to mixed reviews. We contacted a promoter that we got off of Yelp (Brian @ +1 (773) 459-8133) and later was passed to Carlos Reyes (+1 (702) 757-5487). They were working together and made sure we got in and have a good time. XS is an amazing nightclub and David Guetta is a must see DJ. Definitely coming back for more. Drinks are expensive but to all of those complaining, it's Vegas.