Not to be crowded out of the busy Oct. 11-13 calendar, one of Henderson’s best festivals — and one the valley’s best cultural gatherings — returns for the 15th year. Thousands flock to the Aki Matsuri (or “autumn festival”) to watch various dance (including hulu) and martial arts demonstrations, hear both traditional and modern Japanese music, partake in poem (haiku) and flower-arranging (ikebana) activities, and indulge in food made by local Japanese dining institutions. Oh, and there will be an entire sake pavilion and kids’ activity area, so everyone’s covered.