It has never been hard to find a good party in Sin City.
But the hottest time in Las Vegas these days happens to be at 2 o'clock on a Sunday afternoon.
Every Sunday for the past seven years, thousands of people have flocked to the pool at the Hard Rock Hotel and Casino in Vegas for a daylong party called REHAB. And new parties are now cropping up all across town.
Watch the full story on "Nightline" tonight at 11:35 p.m. ET
"We pop more bottles at the pools than at the club,'' one REHAB...Full Story