Bring Cash, as all the good CLUBS that open after 11, are $$$. That said, look at Quickbook for Rooms, lux is Aria, Cosmopolitan, Venetian, Wynn, Bellagio. Good pool scenes, Hard Rock, MGM, Mandalay Bay. Avoid Monte Carlo/Planet HW, Mirage/Treasure Island. Ceasears can be good.
MGM most bang for buck, youn and fun, with Hard Rock a anything goes crowd..
I think most strop clubs there a rip off, lots of pros and pressure to VIP etc, more low key ones are way to go, not so many fake women. Taxi's arent cheap, $15 to get down to opposite end of strip...