The Fox Theater in Oakland is really rad. Will be a great show, I'm going on Wednesday right now but may go Tuesday also. I'd say check out Golden Gate Park for sure. You can drink in the park legally and it's generally pretty great just to walk around in. It's not near the Golden Gate Bridge, it's south of it in the middle of the city. I'd suggest just doing a massive urban hike around the City. Very walkable and so many cool things to see.