Since I [finally] wrote my review on the buffet at Wynn, here's my review for what happened after at Tryst.
Tryst is beautiful. The waterfall inside is a breathtaking sight when you first walk in (especially if it's not packed and it does get PACKED).
The drinks were strong and all made by beautiful bartenders. The bouncers were even pretty damn nice. All in all it was an amazing night. I think the only downside is that I would've enjoyed more seating (which wasn't closed off for table service) because when it gets packed like that, sometimes sitting is much needed (when in killer heels). :P
P.S. Don't fall down drunk the many stairs it takes to get down to Tryst.