data is useless if you are just staying in areas like Tokyo or Osaka, most hotels have internet and many restaurants have Wifi after ipad was launched.
my wife & i have been travel in Japan with and without data, if you have certain Japanese apps on your iphone, you can explore a whole lot more cool restaurants and places like a local, plus coupons. And we need data to check trains & Shinkansen at the last minute because we always change our schedules. |