Let me apologize in advance for my numerous questions but I am a big planner and have never been to the Bay Area before.
Heading to a friend's wedding in late March in Sonoma. Will be spending Wednesday-Friday morning in San Francisco with a group of 5, before heading to Sonoma to rendez-vous with a larger group of friends. Unsure if we will need transportation once in Sonoma (maybe to and from the rehearsal dinner in Napa unless we take taxis) and potentially a few hours of sight seeing on Saturday before the wedding. A large group (12+) will be heading back to the SFO on Sunday morning for early afternoon flights.
What is the most efficient/cheapest way to get from SFO to San Francisco, to Sonoma on Friday, and then back to SFO on Sunday? We've discussed renting cars, hiring a limo/bus, etc. Would appreciate any advice the board may have. Thanks!