How was your experience?
I attend (and host) a number of wine tours and related events. Overall, this was a great trip. Having flexibility and the ability to choose wineries (rather than the usual set itinerary) was a huge plus. We visited Frog's Leap, Rutherford Hill for our picnic and tasting (stopped at Oakville Grocery for food), then over the Oakville Grade to Sonoma. From there we visited Chateau St. Jean, Kunde, Jacuzzi and Cline. Truly a full day at a very reasonable cost. A limo would put you on a stopwatch and you would be luck to hit 3-4 wineries with no commentary.