My husband and I went on the trolley tour and had a great time! Paul was our tour
guide, and he did a great job explaining things as we went along. I know it varies
by day, but the wineries we visited were Monticello, Pestoni, White Hall, and Inglenook, which is owned by Francis Coppola and has a museum. Each location treated us great with their tastings. The trolley was open air for us as it was a beautiful day, but it does look like the center can be closed off with doors if it's a cold or hot day. We would highly recommend this tour. It was a great way to spend a day, drink quite a bit of wine, and have a very nice lunch on the grounds of one of the wineries. By the way, you do have to pay for the tasting you choose at each of the
locations you stop at. Book the trolley! Well worth it!