Each bathroom door has a board on (like to one pictured) showing when a bathroom is booked to a pitch, and when it is available for anyone to use (the blocked out slots).
We clean the bathroom once a pitch has finished in the showers, leaving a clean bathroom for the next folks using it.
This started due to COVID, as it enabled us to open our facilities for folks to use. So many people commented on how nice it was going into a clean bathroom, that we have just continued it. More cleaning for us, but peace of mind for you (and a clean bathroom!).