Dh is a member and I’ve been before (not this year though) - there have always been masses of all sorts. Anything I really liked, reasonably priced, was always already sold, though. Favourite last year was a man sitting on a sofa with a glass of beer, with a dog snuggled up beside him. I do not have the most sophisticated tastes!
But last year my outstanding memory, I’m afraid to say, is of walking away right afterwards, and seeing a couple of hundred naked cyclists (nearly all male) cycling down Piccadilly! It was baking hot, too - I did wonder whether there’d be a plethora of sunburnt willies later.