I went for a full week and had a great time again! While there are always things that can improve I just don't understand that attitude of trying to bash everything. If you don't like it, adapt next year or just don't go. It's really as simple as that...
I went through the stalls every day and it was indeed a bit quiet except for the Saturday, but I guess that was largely due to the heat. Usually I went around 9am, then would go back to my tent around noon for some shade, a cool drink, a nap and maybe reading a book before heading out again around 3pm. After dinner I would usually walk or drive around the fields to admire all the vehicles on display.
Can't comment about the toilets either as our group had booked our own (cost me a whopping £5 for the entire week) but the public ones seemed a bit scarce indeed. Also, I agree about the bins. There should have been more. There were a good number of water points though, which were essential in this weather.
I will absolutely try to go again next year!