Sounds like a good trip. I'm familiar with and like the Healdsburg area. Did you have trouble with bees, or were they actually yellow jackets? I've dealt with Yellow Jackets in that part of the state and they can be a real pain in the rear.
I found over the years that the best way to control bees and yellow jackets is to keep a meticulously clean camp. No empty beer or soda cans on the ground. No food scraps on the ground. All trash cans covered or closed up inside a vehicle. The bees know where the campsites are and they will check them out first thing in the morning. If the scouts find anything, even a small scrap then it's game on and you will have pests all day. Even with a clean camp the occasional scout will come buzzing by your site to check things out from time to time so keep your hand or something over your beer while you're not drinking it.
