Japan is mainly a cash society. The Japanese currency is the Yen. You may have difficulty using credit and debit cards issued outside Japan. Cirrus, Maestro, Link and Delta cash cards are not widely accepted. Japanese post offices, 7-Eleven stores and JP Post Bank have cash machines, which will accept some foreign cards during business hours. Cash machines at banks and post offices generally close at 9pm or earlier and may not operate at the weekends or on national holidays, however, ATMs in convenience stores and some shopping centres are available 24 hours a day. Check with your bank before travelling and take sufficient alternative sources of money for the duration of your stay.