Some friends of mine that live in a collective household had a house party where the public was invited. I thought I would just drop by, but got to talking with quite a few folks. It was a fun and intelligent time for me tho I am not a big party person. I'm also getting up there in the years, but maybe that shouldn't stop me.
At one point, two folks passing through, from Seattle, invited me to join them as they checked out a few other weekend parties around the college neighborhood. I said, "this is probably the most interesting of the parties right here." They agreed and decided to stay. As they put it, "this party had a naked guy that looked like Jesus serving lemonade."
At the party, I saw that the house had installed a hot tub out in their garden. Next day I decided to ride past on my way to another errand to get a better look at the new addition. Didn't think anyone would be using the tub, but someone, I know, saw as I biked by and invited me to join in. I did for a bit. A serendipitous change of plans as I was on my way across town for something else.