My recent guest would arrive at 9 pm (had postponed his time of arrival already a few times that day).
Around 9:30 pm i watched my (mostly) empty street and noticed a guy tumbling in the thicket and climbing out it again. Then staring at his smartphone as if he had never seen such a device. Yes, it was my guest and he was drunk.
So i told him presenting yourself this way to a host is not a good start, especially when your Airbnb account is new !
So what to do ?
I let him in and talked some more to get an impression of his situation/condition. At the end i decided to show him his room.
But assured him: if any nuisance he would be kicked out instantly.
After he left (3 nights), the room showed rather normal, but he seemed not to have used any facilities like shower, kitchen etc.
But the amount of empty cans of beer in the room was overwhelming !