I'm not sure how common it is over Europe, but at least in Prague and in Amsterdam, there are very active campaigns regarding respectful noise levels in the maj

I'm not sure how common it is over Europe, but at least in Prague and in Amsterdam, there are very active campaigns regarding respectful noise levels in the major city areas, which most people seem to be pretty okay with. I still see huge groups drinking and smoking outside every night at the pubs near where I live, but I can't say I've ever needed to complain about their noise levels, so people definitely seem on board with it; I can't say I've ever seen/heard persons getting into a heated discussion over noise, but naturally this is just my limited point of view and reality may differ. Edit: also, just remembered that I even saw a more active approach to this when I lived in Saint Petersburg, Russia, where a few bars even had a "noise meter" outside the bar (just a simple dim but legible LED screen with the purported noise level and a sign explaining that if the number is > N, you're being too loud). It seemed to work pretty well.