No, we did San Francisco on the weekend and Napa during the week... thank god! It was not crowded at all during the week there, but it is a little early in the season too. Stag's Leap is a favorite of so many for a reason :-) Only one tour a day but there were only 6 people on it. The tour w/ them is a steal too, you get to taste all 8 of their wines (and anything else pretty much if you drop some $) for $20 and get the tour... a tasting of just 4 of those is $30 so it is a bargain. Definitely caught them checking out our watches as well. Didn't get to play any golf, I was afraid to fly the clubs and didn't feel like lugging them around anyhow but the weather there is perfect for it.
Glad to hear you liked Sonoma, I want to go there next trip. Talk about beautiful weather, I really want to retire there.