@Meagan-and-Wade0
If you have a 2 night minimum stick to it. I'm sure there's a reason for your decision........I have a 3 night min and if it were me, I wouldn't accept anything less than 3 nights. The guest can decide to actually stay only 1 night out of the 3 but I'd expect to be paid for 3 nights regardless. If the guests need to stay only 1 night, they can go find somewhere that accepts 1 night stays.
It's like buying a whole cake, only eating one piece while throwing the rest away then asking the bakery to accept payment for only one slice. How much the guest decides to eat is up to them......but if the bakery sells only whole cakes they aren't going to let people by 1/4 of a cake or half a cake. Or the guest can go somewhere else that sells cake by the slice.