Clean the toilet blocks later in the day.

"The toilet/showers will be closed from ? Until ? For cleaning".  Both clubs and many commercial sites do their cleaning from around 10am until about mid day, times vary I know.  Why don't they do the cleaning after mid day?  These blocks are mostly used in the mornings.  Go early and you are likely to be in a queue.  Go later and you need to hurry because cleaning is about to start.  Recently we left a site at about 11.30.  Before leaving I went to empty the thetford toilet cassette.  Couldn't do it, the chemical disposal was closed for cleaning.  They want you off your pitch by mid day so why make things even more difficult?  Cleaning toilet blocks in the afternoon would make much more sense, the leavers will have left and the stayers will, probably, have gone out for the day.  Any thoughts on this?