If you are coming to S.F. for the " SFIFF52" /San Francisco International Film Festival 52nd year,,,from 23 April to 7 May, then maybe you would like to plan ahead and book this great show ,,,and also Beach Blanket Babylon, the longest running live theatre comedy in the USA for over 30 years sold out at Club Fugazi . Half price tickets at Goldstar.com or the Union Square '1/2 price (tiny) ticket office' from noon to 6pm in person.
I highly recommend both, along with riding a cable car on the right rail, walking or bicycling across the 1.7mi Golden Gate Bridge, the most photographed bridge in the world and the most famous bridge in the world,,,and when in was built in the 'great depression' it was the longest 2 tower suspension bridge in the world !!
Cheers !!