Once night comes, comes fear for escaper by self bankruptcy. Japan is a country that is a top runner of Capitalism. So if you have to change the whereabout, you should use double, credit card and my card. My ideal situation is Singapore in South East Asia, In Singapore, 25 years ago, a train ticket for just 1station could be bought by Credit card! It is over HK now becoming crumble and crumble, it is de-fact!