The largest of its kind in Northern CA. Admission: $4–$25. Platinum passes $79–$130. General admission tickets available online: free. Oct. 3–5: 8 a.m.–8 p.m. Oct. 4: 8:30–9 a.m. (sensory). Oct. 4: 9 a.m.–3 p.m. (free admission). Sonoma County Fairgrounds. 1350 Bennett Valley Rd., Santa Rosa. View full details: northbay.jbfsale.com.