@Alejandra379 Yikes. Anything you change on your listing now, like adding new rules, I think will not apply to them. You could ask them to verify that are all at least 18, I believe this is allowed.
If I were you, I would keep a very, very, very close eye on this group....I might have some 'landscaping' done while they are there, and offer to send a cleaning person maybe, at the halfway point, something to let you get a sense of that are taking care of the place.
If possible, I would meet them myself when they check in. Definitely take photos of everything before they arrive. If not you, then send someone on your behalf to meet them, someone who is stern and can make clear to them to take care of the place.
I havent' read your house rules, hopefully they are strictish. ETA, okay I just read them, they look good. You say in your house rules that they have to provide ID, so if you didn't just do that, you refer them to the house rules and ask for everyone's name.