difficult families during labor and delivery

Ashton
So my SO has a HORRIFICALLY difficult family. I have already had to tell him that his mother can not be in the delivery room for the delivery because she stresses me out. His mom and dad are divorced and his grandma (mom's mom) and his mom's boyfriend start fights with his dad at literally any moment when they're in the same room; I'm talking, my SO had cancer and during his surgery they got in a fight in the waiting room and got kicked out so nobody was there to pick him up. Is it rude to sit them down and basically say "If y'all act up I will not hesitate to tell you to leave". Not trying to be awful, but I just know on that day especially during labor I will not be playing around with anybody acting a fool! What do you ladies think?