My husband, my sister, my friend, and I are going to visit my cousin in San Francisco from March 18th-23rd. We will most likely be heading to Napa Valley for an overnight trip either Sat., March 19th or Sun. the 20th. We are on a tight budget so we need to plan carefully. We are all in our late 20's, early 30's. We currently live in Center City Philadelphia, so we're used to eating well and having a good time with minimal driving. I'm trying to choose which Napa town we're going to stay in, which wineries we're going to visit (preferably good places that don't have tasting fees or have low fees), and where we're going to eat. Please help! Thanks!