Fans watch Zedd perform at the Bill Graham Civic Auditorium in San Francisco on Aug. 6, 2021. Matt Pang/STAFF. Updated July 30 at 12:10 p.m.: BottleRock Napa has now also announced a requirement that attendees either show proof of full vaccination against COVID-19 or proof of negative test results…

Ethan Miller leads a bevy of Bay Area artists celebrating the 50th anniversary of the Grateful Dead’s ‘Aoxomoxoa’ at The Chapel in San Francisco on Oct. 28, 2019. Photos: Michael Smyth/Staff. SAN FRANCISCO — One expects to encounter a certain amount of enthusiasm for The Grateful Dead here. The Bay…