A Kyushu with kids itinerary built around Fukuoka, Beppu and Yufuin: how many nights you need, where to stay, and how to pick a family room with a private onsen bath.
Day trips from Tokyo with kids by shinkansen, ranked by total door to room time, plus where to stay near the station in Atami, Karuizawa and Echigo-Yuzawa.
Where to stay in Japan in winter with kids: snow play areas, onsen ryokan and hotels, ski-in properties, and the off-peak weeks when rates drop 30 to 50 percent.