Any Way to Mark Days that Cleaners Don't Work?

Our cleaning crew has a few days every year they do not work: Christmas Eve, Christmas Day, New Years Day, 4th of July, and Thanksgiving.

Is it possible to make notes on our booking calendars of these recurring days?

I have already asked the question before about being able to note these days as "no flip" days but there doesn't seem to be a solution in the works for that.

I would be satisfied with a way to note this on the booking calendar for right now. (I have other properties where my cleaners have a different set of days off, so this is an issue for me for multple properties.)

Thanks!