If you count the terrain off the courses this place is a five star ranking.
If you stay on the course get ready to unbuckle your rear binding every run. There was barely a run (on course) where you didn't have to push along for a while. Even the black diamond courses have long flat sections on them or on the approaching course. The trees off of the slopes are fun, but make sure you have some bearing of where
Snow Wave Park Shiratori Kogen review by topherwillis
If you like rails and boxes this might be a fun place.
There are so many flat areas that you can stuck in if you don't keep up your speed. I would only recomend it if you wanted to play in the park. The halfpipes were not open when I went, but it looks nice and long so you can get a few nice launches, if the transition is up to par.