Triple GTA$ & RP on Casino Work, plus a GTA$100K bonus for completing House Keeping, GTA$200K for completing Cashing Out, and an additional GTA$200K bonus for completing one of Agatha's off-the. To purchase the Penthouse, the player can either visit the Diamond Casino and head to the main desk to purchase or visit the Diamond and Casino. The Diamond Casino & Resort is a content update for Grand Theft Auto Online, released on July 23rd, 2019. The update introduces The Diamond Casino & Resort, a newly-opened business located in East Vinewood where the original Vinewood Casino was found. The casino features an exclusive penthouse, casino floor, and garage storage. The Diamond program was introduced primarily to reward players for.