Recreational Freedom
Beyond the artists at the venue, the crowd consisted of people from all backgrounds. Nobody felt excluded there; people talked to each other, vibed with each other, and eventually started connecting on a deeper level. What helped was the fact that most of the crowd was high.
Drugs were not considered taboo back then; prohibition was not of much concern since these substances were still being studied. So, the hippies that attended this event enjoyed the show in a lot more ways than one. It was impressive just how well such a diverse range of people got along without any significant mishaps.