For young children, Yuzawa is the easiest choice: it is less than 90 minutes from Tokyo by shinkansen, NASPA Ski Garden is a calm skiers-only resort, and GALA Yuzawa offers 2-hour lessons. Myoko and Shiga Kogen suit longer family trips.
At Canyons, ski lessons start from age 3 and snowboard lessons from age 6. Keep each lesson group to children of a similar age and ability.
Choose Myoko for heavy snow and a walkable onsen village at Akakura Onsen. Choose Shiga Kogen for variety, with 18 ski areas on one pass, beginner zones like Ichinose, and the Jigokudani snow monkeys nearby.
Yes, if everyone is at a similar level and doing the same sport. Canyons private lessons are priced per instructor for up to 6 people, so one lesson can cover a whole family.
In Shiga Kogen, non-skiers can visit Jigokudani Snow Monkey Park or join a private snowshoe tour (ages 6 and up). Yuzawa and Myoko both have onsen towns to explore.