not a film but a tv show
it was on in the late 90s
groups of real life holiday makers which were german ,english ,american and japanese had two actors in their midst that were there to test the boundaries of what each nation considered acceptable behaviour .
i remember there was outrage in the british camp when the pretend holidaymakers pushed in the que at the buffet
the two actors themselves were daunted at the prospect of the task it and needed a lot of re assurement before doing it
the pushing in task didnt bother the germans whatsoever though