I think as a JMB member you can pay at conbini, bank transfer and all sorts of payment method.
http://www.jal.co.jp/pay/5931.html
So just help obaasan to apply for JMB and tell him to pay at conbini sounds easier, the 7-11 option sounds easy enough if you operate for them
http://www.jal.co.jp/inter/service/tds3.html
Same goes with the netpay option
http://www.jal.co.jp/inter/service/pay/netpay.html
Last edited by ChrisLi; Aug 13, 2015 at 10:39 am