What did you end up doing?
I have a long layover at NRT during my trip to Asia (Arrive at 8:45am and leaving at 9:00am the next day) and wondering whether I should stay at the hotel in Tokyo or come back to NRT.
Also, anyone know what time the NRT opens? Do you guys think I could skip the hotel and come back to NRT as soon as it opens from Tokyo? Call me crazy, I'm thinking of seeing Tokyo as much as possible within 23 hours (without sleeping) when I'm there.

Besides, I'm flying Business to SIN (7 hours flight) so guessing I can sleep on the plane. Thanks in advance.