A few years ago we unearthed some old films of birthday parties from me and my sister's childhood, and the tables were covered with birthday cake, booze and overflowing ashtrays. My mother was a nurse and my folks weren't really partiers. I think that's just the way it was back then.
Yeah, there have always been more drinky folks and less drinky folks. It just wasn't *women* drinking a lot culturally until relatively recently. The same way there have always been smokers and non smokers, but women didn't really get on the action until the 60s.
Both of these events happened because of aggressive marketing campaigns to women.
I would imagine that into the past, drinking at birthday parties probably depended, on average, largely on whether men were involved in those parties. I stipulate "on average" because my mom and her friends definitely drank and smoked heavily at kids' parties, and of course there were men who didn't drink.
But if there was some kind of party before the 2000s, even if it was for a child, your chances of booze being involved was much, much higher if there was a gathering of men. Also, if only men were drinking, they would often do it together off somewhere else at the party, like in a den or garage.
So yeah, I don't doubt that many people here never saw booze at their birthday parties growing up.
Once alcohol started being aggressively marketed to women, but
particularly to moms as the key to coping with their children, it absolutely became a "must have" feature if you wanted parents to stick around.
The 2000s marked this aggressive turn in alcohol marketing in a naked repeat of the tobacco industry's "You've come a long way baby" exploitative "feminist" campaigns of the 60s. It was so transparent, it's kind of embarrassing that we fell for it AGAIN!
I sure as shit did. I literally became an adult in the era of marketing alcohol as "empowering" to women, and then as "coping elixir" to moms as that independent women market had kids.
So it was just inevitable that it became a prerequisite for kids' birthday parties.