In reply to PanzerHanzler:
It seems a lot of sites are going down this road and it's something we keep considering where I work. We've had stag groups running around naked, loud music up until the small hours of the night, drunks stealing food and going into other peoples accommodation. Sometimes groups of families are much worse than stag/hen groups, turning up with loud speakers smoking weed and getting wasted. Some we've managed to throw off the site, some have been too aggressive and unfortunately because camp sites are private property so you can phone the police but they refuse to help until actual violence breaks out.
Every year we have rowdy groups on the camp sites and the inevitable fall out of angry customers wanting their money back because their kids didn't sleep and the ensuing bad reviews on Trip Advisors. I can totally understand why camp sites don't allow groups. We still do but it's a massive ball ache. Most groups (stags and hens included) are fine but you need to have a well publicised groups policy, get them to designate a group leader/responsible person keep their card details, take a big cash deposit etc., employ night watch men who patrol the camp site during the night, make it explicit when they book and when they arrive that you regularly throw people off the site for noise...it's a hassle I imagine a lot of camp sites just can't be goosed with.
It's a shame that these days you need to be a dick to everyone to try and catch out the tw*ts amongst us, even then they still get through. This year we had a group which we banned last year phone up to book in under a different name...didn't realise till the day after, same shit, complaints, bad review on trip advisor, refunds etc. etc.
Post edited at 12:33