Here's another party set I got a while back, dated very specifically to 1952. To me it looks like its set in someone's basement. It's definitely a Halloween party, given the decorations, but as several couples in the photos would suggest, there's a lot of kissing going on too. I'm not casting aspersions on anyone, but kissing is definitely a theme here!
My favourite photo is the first of the batch, especially that character at the centre back. They look like a very prescient Night Of The Living Dead extra to me. The rest of the set features couples, games, costumes and yes, kissing. No idea where this took place, but it looked like it was a lot of fun!