Will mountain mikes check my friends ID if we bring our own bottles?

I plan on renting out Mountain Mike's pizza for my 21st bday. They have a sports bar theme on the inside with a backroom, plenty of seating arrangements, and a small bar. It sounds great only I'm not sure if my friends will be able to drink. Will the establishment ask for I'd if I bring my own liqour? Will they let me set up a beer pong table? Lol