One of the best things going at the time were swingers dances. Just a dance where the like minded showed up. It was how people met, how you got invited to house parties and so on.
You took your skeptical woman to a dance and she met other women who talked and it progressed. No pressure (like one may think at a club because well that is what people go there for!) just a fun night of dancing with guys who were all full of compliments and left the ex (she loved these dances) so damn horny it was crazy.
The clubs were still there but they were like the next step. At the dances the women dressed hot and the guys dressed well. It was a fun time that as far as I can tell is kind of gone.
If there are any of these left I sure would love to know.