Some things in Ann Arbor are guaranteed.
July is hot.
A lot of the art at the Art Fair is inspired by other art at the Art Fair. Find the original idea, if you can.
If it doesn’t rain any other week in July, it will rain and there will be a wind storm during Art Fair.
Anarchy will rule downtown. Otherwise rational folks will cross in front of moving vehicles, shout, say rude things, and eat stuff they will regret.
I hope you’ll spend an hour sitting in some shady spot and watch the other folks. I like to look at shoes, trying to imagine why anyone would wear those in 100-degree heat while walking slowly and standing a lot.