Tsumagoi Resort "Sainosato" (Kakegawa City, Shizuoka Prefecture) will open its Water Park as a summer event within its vast grounds on July 18 (Sat). Prior to the regular opening, it will be open for a pre-opening on July 11 (Sat) and 12 (Sun) for two days! You can use it at a special discounted price on these two days. Cool pools for the hot summer. The "Water Park" summer begins again this year. The Water Park offers something for every scene, with thrilling slides, a river ride enjoyable with family and friends, and a night pool that can be enjoyed with lighting without worrying about sunburn. ★About Pre-Opening Operations Tsumagoi Water Park July 11 (Sat) & 12 (Sun) *Special preferential prices on these two days. Prior to the full opening on July 18, you can use it at special prices for the two pre-opening days. In addition, the two hotels and "Shinrin-no-Yu" (hot spring facility) will also be open as usual. You can stay overnight, relax in the hot springs, and enjoy an early summer mood. ◆Period: Two days, July 11 (Sat) & 12 (Sun), 2026 ◆Business Hours: 9:00 AM - 5:00 PM *Operations may be suspended due to temperature or weather conditions. ◆Prices: Special Pre-Opening Prices Adults ¥2,300 / Junior & Senior High School Students ¥2,300 / Elementary School Students ¥1,300 / Toddlers (3 years and older) ¥900 ◆Benefits: 1 Preferential Discount for "Shinrin-no-Yu": [Adults] Normally ¥1,100 ▻ ¥950 [Elementary School Students] Normally ¥550 ▻ ¥450 2 5% Discount Coupon for Gift Shop Items 3 10% OFF on In-Resort Activities ◆Parking Fee (Tax Included): ¥800 per vehicle per day / *Please enter through the North Main Gate. *Please present your parking ticket at the Water Park ticket counter. *Guests staying overnight should present it at the front desk. Shinrin-no-Yu Business Hours July 11 (Sat) 12:00 PM - 11:00 PM (Last entry 10:30 PM) July 12 (Sun) 6:30 AM - 11:00 PM (Last entry 10:30 PM) ★Regular Operations Tsumagoi Water Park ◆Period: July 18 (Sat), 2026 - September 6