Yes — seeing Fuji up close is genuinely moving, and the Kawaguchiko lake views and Chureito Pagoda are world-class. The one big caveat: it lives and dies by the weather. On a cloudy day the mountain simply doesn't appear, so check the forecast and go on a clear morning, or pick a different day trip.
Yes, on a clear day — the lake views and Chureito Pagoda are spectacular. But the mountain is weather-dependent, so check the forecast; a cloudy day means no Fuji.
Absolutely — most visitors go for the views, not the climb. Kawaguchiko's lakes, the pagoda and a lakeside onsen make a full, rewarding day.