I am traveling with my family to San Francisco this upcoming weekend, May 17-20. We plan to spend the day in Carneros/Napa on Friday the 17th. Most of the group has been to Napa before, and we are returning for a day of fun and wine tasting. We plan to first stop at Domaine Carneros for some bubbly, and then see maybe 2 other wineries and have lunch (either a sit down lunch or picnic style depending on weather). We have to be back in SF by 6pm, so we don't want to travel too far North. We just want to hit some nice wineries that are close enough to Carneros, lower Sonoma or Napa such that we can have a nice, relaxing day and not spend the entire day in the car driving all over the place. Any suggestions would be great! Thank you so much.