Somewhere in my career I learned, that you are always bound to the more stringent rule flying in a foreign country if they exist.
Just because you are night rated and qualified according to FAA rules, does not mean you can fly at night anywhere in this world if you like to do so. There are places that say NO…and you are bound to that rule.
So, for example, just last year I had to produce the paperwork that I completed a “proficiency check” in the last 12 months. It was needed for a permit in a European country. I would have not gotten the permit, if I would have not produced the signed off p-check. But, I would like to find that little blurb in a regulation somewhere, where I can read, that I do need that. That is where my question comes from.