Wedding Bachelorette

I'm pregnant and so is my friend. She is getting married during her pregnancy. She is having a lite quiet bachelorette party. However our mutual male friends informed me that he is having a wild hangover type night at the strip club and a private stripper party where he plans to do sexual things. It's totally not fair. She feels it's ok because that's how bachelor parties go. Men can party like that Women can't plus she's pregnant. Is this really ok!?! How do you all feel about this?