Fuji Shibazakura Festival is the highlight in May. We would be happy to take you there!
First, go up to Mt. Fuji 5th station (2,305m above sea level), look around sourniver shops, and if you wish, visit Komitake Shinto Shrine.
We need 1 and half hour more to visit Shibazakura Festival to see a fantastic view of the land covered with pink phlox on the foot of Mt. Fuji. It will take long time for driving from Tokyo, however, it is worth to visit. You must go there if you visit Japan in May!