Fun & Safe trick-or-treating. Come in costume and follow the BOO Trail trick-or-treating stations throughout the park. This is a FREE, safe, & family-friendly experience for all ages to collect candy throughout Boo Alley! Either a single-day admission ticket or valid 2025 or 2026 Premium Membership is required for admission to The Great Big BOO! The Great Big BOO runs from September 26 through November 2 (Fridays 5-10pm, Sat/Sun 1-9pm).