Do you mean stags or are you calling us slags?
Or are you referring to stag / hen parties?
I've had no problems going out drinking, but then I haven't been to anywhere like Krakow. If I do go there, it wouldn't be in a big party, and by the time I've saved up enough money to go there, I should have had enough time to have learnt a bit more Polish to disguise my Englishness. Hey! I'm from Belgium! Oh no! Everyone just died of boredom.
They don't let donkeys into clubs anywhere, so it doesn't make much difference to me. Although there are a few places out in the countryside I've heard about, but I'm not sure even there I'd be safe!