How does your birthday rooms work, do you pay $$ or have to have so many people

Pretty sure it cost extra if you demand exclusivity as in you want no one else in the room with you if normal seating is full and you are willing to allow people to sit with you then they won't charge for the room

I believe you don't get charged for reserving a room, just for the food

Call and request availability. I've never had to pay to use it.

Call and request ahead. They have never charged me extra.

Call & Request ahead and yes it cost extra

Yes