@3a29 basically this is more to dissuade people off the street coming into the event to ogle at kinksters, making pests of themselves and ruining the event for others. Basically, they want people attending to make an effort in their appearance, but want to both allow for a wide range of kinks, and give an option for people who can’t afford kinky outerwear. The vagueness isn’t isn’t intended to exclude, but it’s a difficult thing to word without doing that