I know what you mean.
Try a checkout with a foreign instructor, well actually I was the
foreigner a couple of times.
Overhere we have a sort of universal language called 'Euro-English'.
It is a mix of the local language, english, gestures, pointing and the
most important, smiling a lot.
Great for ordering drinks, food, directions and so on but not for
instruction.

I enjoyed every occasion and never felt unsafe, maybe a bit confussed.
-Kees