I had a 32 hour layover in Tokyo in 2008, however I was alone and had my own agenda of things to do and see. The highlight of my trip was visiting the Tokyo Tower.

I do highly recommend the Tokyo Metro Subway system as I found it clean, safe and easy to use.

http://www.tokyometro.jp/en/index.html

I printed the subway map prior to arrival which was very handy. You can buy a 2-day open ticket at NRT for 980 yen.

http://www.tokyometro.jp/en/ticket/v...vel/index.html