I went for my first time last year and didn't like it. Yeah, it was cool smoking at the Diag with my group of friends and yelling "hell yeah" when the speakers would say "legalize it now" and "it's safer than alcohol." The Monroe Street fair: it was cool to sit on the grassy area with a bunch of people, but the bands were terrible and played cheesy music.
But the one thing I didn't like from it was all of the trashy druggies from Downriver who were in attendance. Hash Bash doesn't represent Ann Arbor people, imo. A majority of them were from Taylor and Romulus. It's basically a white trash convention. Plus, the most disturbing thing was seeing these people bringing their kids and little babies in strollers to this event. As much as I love herb, if I had kids I would never bring them to an event like that. I was hoping that the clientele for the most part would be a bunch chill hippie and AA folks, but instead it was a gathering of the trailer park residents. I don't know if I'll be going this year.
If you attend, bring joints only. DO NOT BRING PARAPHERNALIA (bowls, bongs, bubblers.) Although weed is decriminalized in the city of Ann Arbor, paraphernalia isn't. I witnessed 3 dumbasses think i would be okay to light up a Phire bong at the Monroe Street fair and they all got arrested.