The only thing to make better would be a less 'rickety' van. The seats were great but too much rattling and shaking!
Very nice trip with knowledgeable guide. I would suggest skipping Sonoma. Too much driving to get there.
The Tour guide was really boring and rude (Dom), we understood this was a customizable trip but everything was already planned when we joined. We visited 3 vineyards, 1 of them was good the other 2 were really not so good. We were a group of 5 and luckily met with other 5 people that were joyful and we ended up having a lot of fun, but the price is overrated for what we got, since the visits to the vineyards were not included and neither was the lunch, we couldnt make reservations for lunch and barely made it back on time to the bus, So the only thing that was included was the trip back and forth and his mumbling on about vineyard knowledge that nobody could understand. I guess our expectations were way higher than what we actually got for the price we paid.