Be warned that even though Kawaguchiko is located right at the base of Mount Fuji, the mountain is not always visible because of clouds. Visibility tends to be best in the early mornings (usually before 9am) and in the late afternoons, while clouds often obstruct the view during daytime even on days with fair weather, and especially so during the hazy summer months.
Among the wide range of other tourist attractions available around Lake Kawaguchiko are hot spring baths, various museums, the Fuji Q amusement park, boat tours and a ropeway leading onto a small mountain next to the lake. Kawaguchiko is also a good base for climbing Mount Fuji, although most people start their ascent from Fuji Subaru Line 5th Station halfway up the mountain these days.