What should I be sure to do on a quick trip to Northern California?
I am in San Francisco for a conference that starts Thursday. DH and I came early to have a few days to see the area. (This is supposed to be my "Retirement Celebration Trip.") He has been aggressively planning things for months while I have nodded politely and waited for the dust to settle (I know him far too well!) Today we did Fisherman's Wharf and the area, Ghirardelli Square, Union Square and China Town. We've ridden the cable cars, stuffed ourselves with crabs and chocolate, watched street performers, and walked hills that folks in South Louisiana can only imagine (I come from the flatlands, folks!). We couldn't get Alcatraz tickets until Monday, so tomorrow we head to wine country. At some point we plan to take our rental car to Yosemite. We are trying to cram a lot of NorCal into a few days, but don't want to miss anything we'll regret. Since we have a rental car, we aren't limited to SF. Suggestions? Tips for sore feet?