If you decide to go, don't take the 101. I was not really prepared for it to turn into surface streets through the middle of some rather busy parts of SF, and while I can't really fault the signing I got confused a couple of times. I recommend taking 101->380->280->1 instead, and the reverse for going home, because while the 1 also goes through SF, it isn't as bad and is very obvious as a road.
I was intending to visit more than just Ft. Point, but I liked spending time there, and my meter started getting flakey again (also hard to read and unreliable at low light levels, like, say, the inside of an unlit fort). I tried to go to a couple of camera stores to get a new one, but predictably they were closed.
Tomorrow: Big Basin. I hope.