"Lovely experience. Mark was an excellent host/guide. The wineries were exquisite. The wine better than delicious. My traveling companions a lot of fun.Suggestions: We drink a lot of wine and some of the guests might feel a little nauseous at the end of the day. Perhaps keep a supply of vomit bags just in case?I have a concern about a lack of communication. On Weds, two days before the trip, I called to confirm and was told that the Santa Rosa departure had only me signed up. I was offered the option to switch to the Sonoma departure to have companions. I accepted.On Thursday, I received a confirmation call. The caller did not know I had made the switch. The caller did not know that on the Santa Rosa departure I would have been the only participant. Had I not called the day before, I would have not known that I would be the only guest. That would not have been a trip of my choice.There needs to be better communication. If there is just a single sign-up, Platypus should take the initiative to inform the guest.Four stars because of the lack of consistent and timely communication."