<(I'm for English only, French only, etc... depends on the host country)

And here, it should be American only -- which actually encompasses all languages.

A real plus to the politically-correct realm of United Statesianese is that many people go out of their way not to offend, so the hunt for the shop-translator is on. If a shop owner in a Spanish-speaking neighborhood speaks only Spanish, then this will likely be his primary customer. If he speaks only English -- he probably set up in the wrong part of town, or, like me, married a translator.
;^)
...or hired one.

And if the shop owner is set up at the edge of a Spanish neighborhood, adjacent to an Italian neighborhood, just across the street for the Polish neighborhood, that just happens to be cutting into a Russian neighborhood -- then who really cares? Being close to so many cultures, it would be more acceptable if you failed to completely understand your customer -- in fact, I would think it would almost be expected.

Learning the language of your neighbor is good. Learning the patience required to coexist in an international region is even better. Learning them both, though, makes you a community godsend, and you’ll become everybody’s friend -- because not everybody speaks the language(s).

Personally, I can’t do it. I’ve been around this world a couple of times in my life, and languages completely baffle me. My wife, on the other hand, picks them up like a cold.

Dan