In reply to zakalwe:
I 'climbed' Mt Fuji about around 14 years ago, I think it was in July so I can't give you any early season info.
The hike up the peak was like a giant scree stair master. Restaurants, pay phones and vending machines on the summit. Oxygen was sold in cans that looked like hairspray. Altogether very strange.
There are eight huts on the way up, an hours walk apart. Spent the night at the highest one and got ripped on Sake and missed the sun rise from the summit.
I think the most amazing thing was seeing the pyramidal shadow of the mountain stretch off to the horizon at sunset.
A Japanese saying (something along the lines of) "A wise man climbs Mt Fuji once, only a fool does it twice".