Once you’ve acquired the property you will become a VIP which gives you access to a number of bonus amenities in the casino: VIP Membership is unlocked by acquiring a Master Penthouse property in The Diamond Casino & Resort.
You can purchase the Standard Membership from the reception area in the casino, or via the casino’s website.
With this membership you are able to take part in number of standard casino activities like Table Games, Slot Machines, and Horse Racing. The Standard membership is available to all players of GTA Online for $500.