@Bruce630, We had a guest who decided to bring their own above ground pool (without our knowledge or consent) and started filling it using our kitchen faucet and a few water pitchers.
I was alerted by neighbors. Just when I thought I'd seen it all.
I purposely do not even supply a garden hose - because I know a lot of adults don't watch their kids, and I don't want a flooded basement.
I reached out to AB&B to handle it from there because I know that no insurance co. nor aircover would cover me liability-wise if anyone was injured.
The guest left as scheduled, upset with me. *Sigh*
They didn't even leave me a review, or a "Thank You" or a "I'm sorry about your soggy backyard" note.
Good luck and make sure you discuss with your insurance co. before you dive in.