So OP. Why did you carry on if you felt it was wrong? Because, IMO , it isn't easy to to be the only person in a crowd that says no.
I think I've written about this here before, so forgive me if I bang on about it a bit.
Years ago I was leaving a job. It was the 1980s and it was relatively common for people to hire a strippergram for leaving dos.
I was sexually abused as a child and teen, and hated them. I hadn't told anyone about the abuse, but I did tell everyone in my department that I did not want a strippergram, I would hate it, I would be very hurt and upset if they ordered one, and if that was what they were planning for my leaving do I didn't want a leaving do.
They promised me there wouldn't be a strippergram. Then of course, an hour into the party up turned this big fat bloke dressed like a wrestler. He manhandled me into a chair and did his thing.
I was frozen. I just couldn't move. And I was terrified. It only lasted about ten minutes, I'm told, but it felt like hours for me. After it was over I couldn't move. I couldn't speak. I had flashbacks to it for years. Just typing this now is making me get hot and sweaty and I can feel my anxiety rising.
So nope, if I'd been in the OP's situation I wouldn't have been able to leave and I would have not only hated it at the time, I would have suffered because of that sleazy, exploitative, horrible "fun" for years after.
And that is why it's not fun to spring things like this onto people, or to think it's a fun surprise. It's vile. It's horrible. If you want to do it then that's up to you but make sure everyone involved knows well in advance what is going to happen, and do not pressure people to join in, even if they're smiling and not objecting.
OP, if I were you I wouldn't go to the wedding. I'd just cut them all loose. It was an awful thing for them to do.