Fine dining in/near Sonoma with a 3-year old?!
If you're out on Hwy 12 Cafe Citti is a great, casual place that to go with kids. Our son is 8 and we have been going there since he was a babe in arms. Also Kaz is a very kid friendly, small winery nearby that might be worth a visit.
Kaz Vineyard & Winery
255 Adobe Canyon Rd, Kenwood, CA
9047 Sonoma Hwy, Kenwood, CA 95452