@David7362 @Hilltop0 @Pat271 and others, or could simply be that there are other people also trying to book, have sent through 'Multiple bookings to Multiple homes/ places" at the same time and it's going through "Checkpoint" processes which automatically BLOCKS one's available dates until that's cleared.
It's extremely annoying when that happens as it obstructs others who may also be looking for accommodation on or within that timeframe.
I think you will find that this happens more often than you realise.
I've had it many a time this year and it wasn't until I had looked back at my calendar and seen diagonal lines across various dates that were not 'actually booked or had a guest' it appears as if there's some users making bookings at 'Multiple properties" on the same or some of the same dates as others who don't think of the inconvenience this may create if they don't Withdraw their booking attempts or have found another place to stay.
Have a look at your calendar after the said dates have passed and see if those lines appear.
Meanwhile if 12 hours have passed those annoying "Clash of code Checkpoint" processes will lapse and one's calendar will free up.
It may be beneficial @David7362 and others to ask for a Request to Book over nights when festivities may take place.
Never tar all people as having intentions to have parties just bc of the number of people you may be able to have stay on one's property.
As previously stated, there are many people who come from large or blended families or maybe simply having a reunion after a crappy year.
ASK potential guests what their 'intentions of stay are' and for a full list of names and car registrations coming onto the property who are staying there.
All the best
Central To All Home & Location, Remuera, Auckland, New Zealand.
PS Remuera has older Heritage homes that may accommodate over 12 people and many of them are respectable thoughtful people , my home isn't one of them.
Like most areas, we only have random problem parties in the area.
Surprisingly, they do however happen in smaller number of room properties 🙂