@Thisisworsethananticpated when I went to a sex club (parties may be different) I wore a bodice and thong set from love honey, stockings and a pair of tailored shorts (hot pant length) plus high heels.
Most of the women had evening dresses on, some were just in their lingerie. Then men wore trousers and shirts.
Everyone gathered in the bar and it felt no different to a night out, talking and drinking.
Then around an hour later some couples went off to the play area. This area is no clothes so lingerie or naked.
They have lockers to put your clothes in and towels you borrow.
Then within the play area is a jacuzzi (large) and various 'beds', generally everyone played with the partners they went with but after a while couples paired off.
It is 100% consensual, you don't touch anyone in any way without consent. If you don't like someone you say so.
If you don't want to swing you dont.
You can go between the play area and the bar quite freely, some couples didn't even play.
They also provided pizzas at midnight๐
At the end of the night everyone was in the locker area getting changed into their normal clothes and still chatting and we met couples we'd not noticed all night.
We stayed half naked as we were staying on site, then we went to our rooms.
It was all very civilised.
Some clubs don't allow single men on some nights, if they do allow single men numbers are limited.
Some people don't like going to events with single men due to their behaviour.