What do you do if you're a ski resort in Hokkaido with nobody visiting in the summer?
The amusement park opens at the start of Golden Week (usually the last weekend in April) and closes in late October. Hours vary by the season, opening at 9 AM and closing as early as 4 PM in October, and staying open as late a 8:30 PM in the summer. All-day passes are 4800 yen, and if you make reservations ahead of time that includes transportation to and from the resort from Sapporo. There is a hotel on-site so it is possible to stay the night here. Summer transportation options aren't listed on the English website right now, but in 2013 they had a bus that left Sapporo around 8 AM, arriving around 10 AM, with a return bus leaving around park closing. Going off-peak, there weren't any crowds to worry about and I was able to ride everything I wanted multiple times in the six hours I was there - but of course a couple rides I wanted to experience were closed.