When the Bucktown All-Stars perform at Mid-City Lanes Rock ’n’ Bowl on August 12, it will be more than the weekend-warrior band’s annual back-to-school event. It’s an anniversary party, marking the band’s 30 years of entertaining at weddings, Mardi Gras parties, fairs, festivals, conventions and music venues.

The current Bucktown All-Stars lineup includes singer-drummer Steve Alfonso, a founding member, and trumpeter Ke...