We had only 3 couples on our tour so it was more like having a small party than BIG tour group (we saw some of those big winery tour buses in front of our hotel, wanted something smaller a bit less boisterous, etc.). Riding the old converted SF trolley was fun as you're facing the other couples so you can share stories, etc. You visit 4 wineries which they change out (we found out that Sonoma has over 400!). Each one has their own unique character which is quite cool. They include a nice lunch and can pick you up in front of your hotel (before booking yours check to see which ones) which was great as I didn't want to drive afterwards. Our guide, Kyle was quite knowledgeable and a very easy going personality … perfect for this kind of a tour. This is definitely a fun way to visit a few wineries in and around Sonoma.