I am organizing a limo wine tour for 8 women for a bachelorette and would love some help in choosing wineries, how many we should go to, etc. We are leaving from Silverado Resort in Napa at 1pm and have the limo until 6pm. The date is for Saturday July 21 so we will need to choose places that still would be open for reservations/private tastings. The bride is a big fan of pinot noir and sparkling wines, but we are mostly just looking for high quality wines and the best overall experience (staff, crowds, location, etc). I would love to avoid the overly touristy wineries. We are all from the SF area and have been to many of the big ones - Mondavi, Sattui, Beringer, etc. So far I am interested in Sinsky, Frogs Leap, Coppola, Domaine Chandon, and Sbragia Family Vineyards. What are the thoughts on these choices and am I missing any "musts"? Are there tasting costs for any of these? How many should I try to fit into one trip? Technically a few relatively close wineries would be our best bet so that we get the most of our trip, but I'm open to suggestions. We are really just looking for places to taste only and not for tours of the winery if that makes any difference. Also, we are going to stop somewhere to pick up sandwiches to take with us - any thoughts on this as well?