Informal Poll:
I graduated in 1977, Mr. Kitty in 1982 (okay, he’s my boy toy - skip it) - did you ever attend a party where a train was happening?? Now, we both attended our fair share of parties back in the day, but neither of us could recall a party in high school or college where any “fun” happened at the actual sight. It always happened out in a car, or people who hooked up would go somewhere else.
So, trains? Are they unusual?
In biker clubs, no.
I’m the same age as you - while we weren’t totally innocent, we did NOT do anything like that in public with others watching. In fact, I didn’t learn that one of my best friends had been having sex with her long term boyfriend until years later when we were in college. I think this woman is a nutjob - I just don’t believe anyone in 1982 would have stood around laughing as a line of boys waited to rape a drunk/drugged woman....seriously, how disgusting would those girls have to be to allow something like that?
I am a male and a year older. I agree with your informal poll. That is about the way I remember it. House parties were a rarity. Most of the parties were outdoors at a lake or park..