Tickets likely will not be available on the day of the event, according to the chamber.
The event runs from 1 p.m. to 6 p.m. Saturday in downtown Petaluma, and features 14 breweries including HenHouse, Lagunitas, St. Florian's, Three Uncles, Dempsey's, Carneros and more.
Food will be provided by Cordozas Catering, Belly Kitchen and Tap Room, Tres Hombres, Rotary Club sausages and more.
Tickets are $30 and include a souvenir glass and 10 tastings. The Petaluma Area Chamber of Commerce is open 9 a.m. to 4 p.m. Monday through Friday, and can be reached at 707-762-2785. It's located at 6 Petaluma Blvd. North, Suite A-2.