Originally Posted by
jackho
It looks like that the site checks the IP, if accessing from Japan, it won't let you continue.
T&C check-box & purchase button were disabled when I opened the page.
Of course oversea proxy may override it, but I think the airport staffs will check passport's visa (and/or immigration stamp).
Nice to know that they do some basic checks. I guess they should check the billing address of your credit card too
