I usually go to Kagura early in the season and late in the season.
Early because it's not crowded like it is usually and also because it's one of the first resort to receive big amount of snow. This year 2010, was unbelievable, there was so much powder in December, you couldn`t actually ride it unless you were on one of the steepest side of the mountain. Sometimes, not all areas are open (Tashiro usually opens later).
Late because it's also not crowded and it`s one of the last resort to close (it`s not unusual to go there until golden week !). They also start operating an additional lift from early March which leads you to one of my favorite run in Kagura.
The resort is big, you can easily stay 2 days there without getting bored especially if you take the Naeba ticket. The park is fun to take a break off the slopes or to have some fun before taking the gondola back to the parking.
Tashiro will be good for beginners (beside some flat parts which requires to have speed not to stop).
No specific date.
Snow condition on visit:
Usually better than other lower resorts in the area
Things I liked:
Big resorts, famous for backcountry and tree runs, cool patrol