One of our favorite restaurants in Sonoma County is Thai Cuisine, in Petaluma. The restaurant is in a converted Victorian house. There is a separate room on one side for larger parties.
Lunch runs around $10/person with (vegetarian) soup included. The curries are very nice and they will prepare them spicy or mild depending on your preference. Wendy’s favorite dish is the Vegetarian Deluxe ($9) with lots of different vegetables including pumpkin, mock duck, salad and rice. Ian’s favorite is the duck curry ($10). The Thai iced tea is really good and the service is friendly (it’s a family-run business).