Sept. 13: 9 a.m.–8 p.m. ($10–$25). Sept. 14: 9 a.m.–7 p.m. ($4–$8). Sept. 15 (Sensory Shopping, no music): 8–10 a.m. (free with online ticket). Sept. 15: 10 a.m.–7 p.m. ($4 or free with online ticket). Sept. 16: 9 a.m.–3 p.m. ($4 or free with online ticket). Sept. 16 (half-price): 4:30–7:30 p.m. ($10). Sept. 17: 9 a.m.–2 p.m. (free). Parking: $10. Sonoma County Fairgrounds. 1350 Bennett Valley Rd., Santa Rosa. Tickets: northbay.jbfsale.com.