I managed to get 3 or 4 hours of sleep on the flight to Narita which was enough to allow me to be somewhat conscious on arrival. Even so, by the time I went through customs and got my bags I was dead tired, but at least I had been to Japan before so I knew the drill. Everyone on our plane pretty much stuck together so most of us took the same shuttle bus to the Narita Kikusui hotel. After checking in I went to my room and collapsed. A lot of people went out for dinner but I was way too tired--I know I wouldn't make it past the appetizer. So I went to bed and slept for 12 hours.