I can only remember clearly the ones from 1963 onward, the ones before then I simply endured and quickly forgot.
I was 13 in '63 and had my first proper "snogging" session with a girl up in the dark Stands after the Sessions had finished, I thought of her as "Hotlips" forever more.
'69 was memorable, involved a different girl of course, we got engaged eventually, but I broke it off when as my youngest puts it "Mum (Mrs Phizzy) muscled in ".
After that the length of Conventions got shorter and shorter, but to quote Monty Python's Four Yorkshiremen, (not verbatim) " Of course, we 'ad it 'ard, tell that to the kids today, they won't believe a word of it".