Having worked in a family owned shop part time many moons ago it's politeness & curtesy from the shopkeeper/staff which makes customers return time & time again.
If i ever visit a shop & witness rudeness & tend to boycott in the future.
You're correct about learning something from going abroad, but it's all down to the British attitude to not liking being subservient.
Waiters & the like abroad see it as a vocation, not some part time holiday job on the way to a better career.
It costs nothing to say please & thankyou
