Originally Posted by
Syque
Re SIM cards: I've read that tourists can buy
Data only SIM cards in Japan and the store clerks will generally make the activation call for you. The specific card I read about was B-Mobile 1GB data for 1 month. Is that true? I'm not interested in voice, just data.
I think I'll be going with the connecting flight for the earlier arrival. Thanks for all the info everyone

Yep, 1GB for $30-$35. Just used it in January. Very easy. Had it shipped to my hotel, but you can pick it up at the airport - if the post office isn't closed, which it may be for the later flight.
http://www.bmobile.ne.jp/english/