As per the title, what's the acceptable limit for you? Having a family dinner with your parents, followed by scrabble or monopoly? Going to the local bingo and flirting with a couple of the grandma's? Going bunjee jumping or skydiving or on a race track day or something like that? Going to the pub with the boys, getting a little pissed, play some pool, darts, maybe even place some bets on horses or dogs? Going to a strip joint afterwards? Going to back to the pub and getting a drunk girl in the back seat of your car, or on the beach, or just going to a brothel? I've just got a few suggestions listed here, but feel free to add your own if mine don't cover your ideal bux or hens night. The most important thing, is where do you draw the line between acceptable fun, and unacceptable behaviour for someone about to get married?