Scott Disick returned to Las Vegas on Friday night for another party and made it mostly a bros' night out. The 32-year-old former partner of Kourtney Kardashian was photographed with several guy friends at the 1OAK nightclub in the Mirage Hotel and Casino, where he hosted a bash. Scott has battled substance abuse and began a new rehab program in October. According to E! News, he is allowed to travel freely, and has also not been seen drinking alcohol at his recent club appearances.