More violence (mostly drug-fuelled) than I've seen anywhere else, including football-related in the late 70s. Plenty of really aggressive new-age types peddling their notions - new age-ness is fine; it was the aggression that was the problem. One woman followed me for three hours, hassling all...
Knebworth twice, including '79
Latitude three times
IOW twice
Reading twice
Leeds
Cambridge Folk Festival five times
Burning man, only the once, thank God.