I came to Las Vegas for a Bachelor Party, and one of the places we had to attend was Rehab Beach Club. Rehab is by the Hard Rock Hotel.
Before you go, you should know that the security will not allow you to enter with certain items. If you come with more than your bathing suit, flip flops, and purse/wallet you will need to throw out the item or check it in. They also pat you down so don't think you can get away with things.
The set up of the pool party was pretty great. My group got a cabana that was near the pool. If you can afford it and have a big enough group, that's the way to go for stunting purposes and to lower costs.
The energy of the place was great. I enjoyed the DJ and I had nlots of fun. I have been to multiple beach parties in Vegas and this is one of my favorites. Sunday is the best day to attend.