If you haven't figured it out yet Vegas is HOT in the summer! If you want to cool down this is not the place for you!
Tao Beach is petty small and the pool is even smaller ( not to mention the color of the water is suspicious at best!) Drinks are Vegas priced which is not a shock, but it's whatever. When we went it was very crowded and all of that unnecessary body heat does not help. There are better pool parties in Vegas, but if you are staying at the Venitian go for it, if not find a better party.