The number of VIP points you have collected determines your VIP tier.
Each tier grants you certain privileges - including bigger daily and hourly bonuses, better sales, as well as extra percentages on gifts and jackpot wins.
The more VIP points you collect, the higher your VIP tier, the better your VIP benefits.
You can view the full list of VIP tier benefits by selecting the information button on the VIP tier bar at the top of the lobby screen, or from the menu.