Between St. Vartan's church bazaar, Hardly Strictly Bluegrass and the Alameda Point Flea Market, I complete forgot about it. I saw their email after the fact and Corso and Bistro Liason, among others, had street stands.
For perfectly fried, mozzarella Arancini, dip a rice ball into flour and shake off any excess. Dip floured ball into egg, allowing any excess to drip off. Finish by coating completely in breadcrumbs. Repeat.