I don't list a curfew I am not trying to parent Haha Plus if you set a curfew there is always a guest who monitors you are you enforcing it and if you set 10 or 11 everyone has a comment too early too late .
Most of my guests are contract workers and because Arizona heat they can be leaving for work at 4 am and I too have 2 barking welcoming committee members who don't wear a watch
I highlight early quiet evenings and comfortable early risers.
I have quiet time set for 10pm to 5 am. I review with guests that quiet time doesn't mean quiet traffic especially in and out no traffic please unless approved..
That also gives me control to say yes or no. I have an excellent temporary guest a foreign vet that works on a farm but noon until 10pm. The trick II use for my welcoming committee iis they get used too a certain schedule then it is boring hahaa. Until it is boring I usually leave some chewy snack on the counter the guests give dogs and mine easily distracted