Held every April since 2015, the Errl Cup spring festival is a contest between dispensaries to win awards in over 32 product categories including flower, concentrate, vape pen, edibles, topicals, and CBD, judged by medical marijuana patients. In 2021, the festival was held at the Digital Drive-In AZ property on Alma School Road in Mesa, and hundreds of cannabis vendors set up booths across the lot, kind of like a marijuana swap meet. Errl Cup entries are displayed in a large tent area at the festival for patients to review, and the atmosphere stays high and light with food, live music, and an awards show. Best of all, it's free to attend and free for patients with valid MMJ cards to judge (although you've got to register to win a spot in advance).