I began emailing with Jim, owner of Magnum about 8 weeks prior to our arrival. He asked questions to find out what we were interested in as far as wine/vineyards were concerned. He set the entire day up for us, including all appointments at vineyards.
Our driver MIke was very friendly and knowledgeable about the area. He had the car stocked with water as well as plastic utensils/wine opener/cooler. All of our tours were expecting us and we were the only ones there since we opted for smaller, more boutique wineries where appts were necessary. We had a great day and Jim is very accommodating to your needs in order to make sure that you have the experience you are looking for