Probably the best pool party in Vegas, I've been to the Wet and Rehab pool parties and i have to say this is the best party especially on a Saturday morning. They have two ways to enter to this pool party, one is through the hotel itself and the other is walking up stairs from Vegas strip they have a sign that says Encore Beach Party outside and you just follow that up the steps.
Side Note: We stayed at the Encore Hotel and thought we would get some kind of discount, but you don't but you do get In and Out privileges by showing your room key when you purchase your tickets as you get a special colored wrist band that shows your a hotel guest. They have about 3 fairly sized decent pools, the crowd is young Saturday mornings as compared to other days, the music is House almost 95% of the time, the bar area is amazing, the place is really clean, everybody is just drinking and dancing in the pool, out of the pool...this place is just a Vegas must in the summer time!