Take a day and climb Mount Fuji. I loved it. Still have the hiking stick. If you are into clubbing and drinking. Roppongi is the clubbing district of Tokyo. Back in the day. Gas panic was a club to go to. Wall Street was another that was more casual. Visit the shrines and the culture. They were really interesting. Try the food at the 7-11's. chicken on a stick. Go to a restaurant called yoshinoya for a beef bowl. They are fairly inexpensive but I could eat those things for days. You can buy beer out of a vending machine while walking down a street. The people are really respectful.