On the contrary, I think it would be easier at Taco Bell in Missoula, because of cultural issues. Taco Bell in the US is likely to be staffed by minimum wage teenagers who don't have a clue and don't really care, and will probably swipe whatever you give them. When was the last time you had a cashier check the logo on the card before swiping? In Japan, society is more about following rules and maintaining order, and staff are better paid and more professional, so it will be harder to get them to "just try it".