After being told by concierge that Wynn guests don't get any special "ins" at Tryst or XS (Steve Wynn himself said so on the hotel TV channel!), we decided to cruise into Blush since there was no line and no cover. Score for us and our crapped-out (literally) riends.
An OK place to wind down the evening, but as other reviewers pointed out it's much more lounge than nightclub. It was pretty dead (the dude next to us was playing on his MacBook), but we were able to chat and enjoy some nice decor with a quick drink while watching some awkward cougar dancing ritual so it wasn't a bad time.