is the prime room open

I am not sure what that is

Hi Cathy - Not sure what the Prime Room is. But our High Limit Room and Vault are both open: https://www.sanmanuel.com/vip-gaming. If you are referring to the Pines, that restaurant remains temporarily closed as part of our health and safety plan: https://www.sanmanuel.com/san-manuel-health-and-safety-hub. -San Manuel Casino