While there's definitely a larger percentage of the public "on drugs" than you find in day to day life (and a lot more people drunk on alcohol), there are still

While there's definitely a larger percentage of the public "on drugs" than you find in day to day life (and a lot more people drunk on alcohol), there are still many sober people at the event. I'd posit at any given time the majority of participants are sober, with the exception, perhaps, of Friday and Saturday night.