I went to Matsudai Family on a Monday recently, which was a national holiday in Japan.
This place is very close to the Matsudai Rail Station on the Hokuhoku line, one stop away from Tokamachi. If you have no care, a cab ride is about 700 yen from the rail station. For a ski resort it seemed relatively uncrowded. Being a relative beginner, I found their beginner course fun and interesting This is a small place with only two lifts.