The largest of its kind in Northern CA. Admission: $4–$25. Platinum passes $75–$125. Oct. 3: 8:30 a.m.–8 p.m. Oct. 4: 9 a.m.–8 p.m. Oct. 5: 8–9 a.m. (Sensory). Oct. 5: 9 a.m.– 8 p.m. Oct. 6: 8 a.m.–1 p.m. (1/2 price day). Sonoma County Fairgrounds. 1350 Bennett Valley Rd., Santa Rosa. Full details: northbay.jbfsale.com.