Not representative.
However, I do belong to a couple of winery, wine clubs here in the USA. I was talking to some of the tasting staff about bachelorette parties. The staff did tell me that they absolutely hate them. They take the money pour the tastes as quickly as possible and get them on their way as soon as they can. The folks had nothing but bad things to say.
Does that mean that they are all bad? No. People were just asking about bachelorette parties and I was relaying what I saw in Europe as the worst examples I have personally seen.
Can people of any group behave badly, especially when alcohol is involved? Absolutely.