I don't want to give details of which party I went to as I want to keep my anonymity and posting too many details, particularly at an event where there are a lot of people makes it far to easy for anyone who is there a few times to connect my IRL and online identities.
But I will share a little.
The parties are now running business as usual, just as pre lock-down. Same venue, same-ish ratios which are closer to 1:1 than 2:1. They did do a week at another venue and attendance was poor.
I was worried catching covid, but more because I'd given my other half a cover story of a business meeting and then would have had to explain to her why my customer wasn't isolating in the following weeks and I would have worried about not telling the tracer the truth.