I completely agree.
We all know by now the toilets can be improved so I think we should now focus on trying to come up with workable suggestions instead of describing the same problem over and over again, which will only ensure everything we say will be completely ignored by the organization, and rightly so.
We will have to start thinking as an entrepreneur for this, as for us this is just a hobby but the organizer will need to make a profit or the show will over, it's as simple as that. So the central question is how to get the best possible toilets for the least amount of money? This is a different question than how to get ANY toilet for the least amount of money though.
So, my suggestion as I already wrote is to use the toilet blocks/trailers (rather than the individual toilets) as used in Folkstone and concentrate them per field in 1 or 2 locations to keep the number of cleaners needed down. This is more efficient (and thus cheaper) in manhours while these blocks are easier and quicker to keep clean than the separate toilet units used this year. In Folkstone they were concentrated too and I think most here will agree they were as good and clean as you could reasonably expect. Part of this is because those block toilets would actually flush into a shared waste unit, which makes emptying them also more efficient.
I could be wrong but I think the cost is not so much the difference in hiring the blocks vs. individual units, but the manhours required to clean and empty them. If those can be cut back enough we will have made significant progress.
I like this show. It is my yearly vacation and I like to go through the stalls, walk around the living history and vehicles, talk with friends and even have a spare hour to read a book sometimes. The sheer size and variety is part of the attraction and I would be very sad to see it go.