You'll enjoy it. Incidentally, if you're planning on travelling around such as Kyoto, Nara, Himeji or Hiroshima, buy a Japan Rail Pass outside the country: a week's unlimited travel could pay for itself on your first journey. There's also a regular bus from Shinjuku to Fuji, though I don't know how far up it goes in winter. Shinfuji shinkansen station is a looong way from Fuji :-)