I think what you're talking about is the "kidzz" culture that kind of exists at the nexus of the Deadhead, Phishhead, Jamband, Desert Party, Goa, Crusty, Rainbow Family, New Age Traveller, and Burning Man scenes.
I... I was kind of like that in my late teens... I just kind of fell into that crowd after living in fucking ORANGE COUNTY for 6 years. Ughhhh.
dreads, Dead and Phish tour, acid, ecstacy, dancehall, raves, DnB parties, Rainbow Gatherings, trading Dead shows, living on the road for a while... the whole thing. In my defense, the dreads were just temporary and only started forming on tour. *shakes head*
I don't totally regret it though. Shaped who I am, for better or worse. But yeah, those people are pretty much permanently on drugs, especially when in groups. It's INSANE. They do more drugs than ravers at their worst.
*edit to say, I never dressed in the post-apocolyptic yogi costume, but I came across them too often.