For fuck's sake.
There was one person handing out wristbands for 800 people.
All but a few were happy to put wristbands on themselves. Do you think 785 people were all wrong?
The woman was part of a group who were all happy to attach their own wristbands so she had plenty of friends who could have done it for her. No reason to demand an employee do it.
Event was inside a building, not at a festival, so no "walls" anyone could pass a band over. It isn't physically possible to get inside the building without showing a ticket.
Wristbands are used purely to show what group people are in for events, which is completely random. The evening comprised various events run on a strict schedule (three events run simultaneously, and all three events are then repeated three times) but each event is limited capacity. So each person is randomly assigned either a blue, green, or red wristband on arrival. If you have a blue wristband you do activity 1 first then activity 2 second. If you have a red wristband you do activity 2 first. Green wristbands do activity 3 first. That's the sole reason for the wristbands. NOT to show that you've paid! If you hadn't paid then you would not be inside.
Management rule was that holding wristband or attaching to clothing is fine, since there's zero possibility of giving a wristband to anyone else.
If people want to swap wristbands then that's perfectly fine since the only reason for the wristbands is to ensure you don't get 800 people all trying to do activity 1 at the same time. So if a red and a blue swap it doesn't matter, since the total number of reds and blues remains the same.
You're all missing the point that asking to have your wristband put on is fine. Rudely demanding that someone use up three different wristbands just on you because you have such specific yet unstated requirements on exactly how loose you want the wristband to be is not.