I was very surprised that a tourist whom I guided Mt. Fuji and Hakone area in October was a brain surgeon again. He also showed me pictures in his smartphone in which he was in operation wearing operating clothe.
One day pass was about 6,000 yen. We didn'thave a time for lunch, then he gave me 1,500 yen for lunch.
On the back way to Tokyo, he got on the Shinkansen, bullet train, from Odawara station to Shinagawa in Tokyo using JR green pass, it took about 35 minutes.