Just observe the guests for a while.

You place yourself next to one of the bar tables and just scan the room for a while. The men are all dressed quite elegantly, and you soon see a pattern: Younger men, probably first-timers to the party, wear the kind of suits they would use for a nice business dinner. Most of the older men - or at least those who walk around with a kind of ease and self confidence showing they have been invited a few times to these special parties - are dressed more extravagantly: Suits in the style of past centuries, all kinds of hats, or even strange colors and fabrics. Some are walking around in leather costumes. But nobody looks like a freak, they exude wealth, power and dominance. Except for those men who are walking on a leash of their wives. You also see one or two of those.

You had expected very few women, but that's not the case. There are quite a few dressed in leather and latex costumes, dominant and proud. There are others walking naked next to their men, or chained to a man's wrist. You see quite a few naked boobs and buttocks, sexy lingerie and ****'s costumes. All women who pass by walk with grace and sensuality, and you have to admit that just standing here and watching them is rather arousing.

Nevetheless, there must be more to this party than just watching strangers. You decide, after a while, that you have seen enough, and it's time to seek out some action.