Summer Activity NAC’s summer adventure line-up has something for everybody. Activity + Lunch Packages Niseko Summer Rafting NAC Adventure Park Niseko Spring Rafting Family Rafting Platinum Rafting River SUP Ducky Mountain Biking Tours Trekking 2022 NAC Day Camp River Kayak NAC Special Packages Big group activity bookings Discount for the activities Restaurant JoJo's menu for a big group