in London in the early eighties and Punk Rock was nothing but troubl
AFAICT European and American punks were very different, in the college town I lived in they were careful not to do much damage (shows were organized by a member of of a local band that everyone knew and they didn't want her to lose her deposits). A few shows were held in houses (when the few local venues were unavailable). There wasn't much in the way of drugs since "straight edge" was a thing then.
This wasn't any kind of commercial enterprise - there was a sort of small punk band... circuit in the 1980s (into the early 1990s at which point I lost track) followed by a bunch of never-to-be-famous-groups who were touring more for fun than for fame and fortune.
The band members would pile in a van and drive from city to city, crashing in the living rooms of locals who organized the shows (there was an informal network so they knew what bands were coming and when). The locals would also make up fliers and post them so people knew when and where the next show was.The bands also sold their privately printed lps and t-shirts to help get gas money to the next town.