Memories ... in the corner of my mind.
I was on my bycicle riding around the (then) Holiday Inn in Utrecht the day before the concert ... should I go upstairs? Naaa ... why bother the guys. Let them enjoy their privacy on the top floor. Did I see some groupies? Maybe.
I hitchhiked to Amsterdam the next day, played cards with three "hippies" in front of the RAI. They thought it was fun to invite a guy in a three piece suit (which I put on deliberately to see if any discrimination would be there ... NO!)
I ended up about 6 meters from the stage (protected area) just somewhere between Steven Stills and Mick Jagger. Great concert, but some (many?) had dangerous times about 20 meters from the stage. They were pushed from left to right and vice verse due to too many people stuffed in that glass hall!
The rumour goes that about 25% more tickets were sold than officially allowed.
Thanks for the links!!! Great memories