Children in costumes trick-or-treat throughout the park. Must register for 1 of 5 (1/2-hour slots): 11:30 a.m., Noon, 12:30, 1, 1:30 & 2 p.m. The basis pass: $5. Delux pass: $10 includes 2 adult-riders & child, $2 each additional person, access to the carousel & train ride. Howarth Park. 630 Summerfield Rd., Santa Rosa. tinyurl.com/yc7tt6yy.