Parents of the organiser would come from time to time to check that all is ok.

Uhm yeah the parties I'm talking about didn't have parents checking on horribly drunken teenagers.

We didn't have "a drink or two". I don't think it's just once that I've carried a person rolled up into a carpet filled with their own vomit out of the house because it was just the simplest solution.

Kinda like a horrible kebab roll, with the person as the meat, carpet as the bread and vomit as sauce.

I think alcoholism is a bit different here perhaps. If we weren't at parties or driving around drinking in cars, there'd be a youth hangout for under under 18's, so we'd hang out there. But you weren't allowed in if you had had a drink. To make sure, my own mom was sometimes at the door with a breathalyser. (My mom was in charge of youth activities in the municipality, she didn't just show up randomly.)

It wasn't every weekend there'd be a party, exactly because of how destructive they usually were. Hell, if you had a party, sometimes you'd just get people from the next town over, completely randomly basically, because someone knew someone and so forth. So if you did have a party the hardest part was usually keeping it in check and not have everyone invite everyone they know.

We needed cars/mopeds because the distances in the countryside are a bit longer.

During the summer heats like this (oh god you made me nostalgic noo) we'd hang out all day drinking at the sandpits, dozen or two little lakes and ponds ~5km north from the town center. So someone usually needed to be able to drive. Although that wasn't so much getting drunk as just having a refreshing drink in the heat and to rehydrate.

Many people lived as far away from the town centre as well, and usually in different directions, so it might be 12 kilometers from the house of one friend to another so mopeds and 125cc's and cars were kinda essential. I do understand Americans in that aspect but now that I live in the city and don't go there any more I just use a bike/bus. But in the country that isn't a thing.