HikerSkier saidTickets to the annual "Passport to Dry Creek Valley" wine tasting weekend have just gone on sale. Tickets usually sell out long before the weekend of the event. Includes a luncheon and tastings at about 50 wineries, many of which are not normally open to the public. Dry Creek Valley is in Sonoma County, northwest of the towns of Napa, Sonoma, and Healdsberg, and has some of California's best wineries.
Having attended this event shortly after it began, while I lived in SF, I can tell you it IS a good time and well worth the money. Consider flying in and out of Sacramento, which is just as close as SF/OAK in terms of time, if not distance, and often MUCH cheaper than either, especially when it comes to renting a car. Make your hotel reservations fast, though, because there aren't that many rooms in the immediate area and they fill up REAL fast. And, don't be shy about staying in nearby SRosa or Ukiah; they're both fairly close and offer access to some really beautiful parts of CA, like the Anderson Valley, and cost lots less than hotels in the Valley itself. If you have a week to spare, go for it and spend some time in SF, too!