Thanks for the head up on California wine tours. Wineries are always a delight to visit and I am more than glad to be able to learn about wineries at other places. Great piece of information.
Almost all of the major wine regions usually sponsor a wine tour, or have one of their own with their own winery. To get a better experience of the wines in a particular area, it is usually a good idea to take the wine tours that go to several wineries. They can be as simple as a bike tour to an expensive yacht trip.