Of course there's nothing to say that the receipts have to be In English - or even printed.....
A few handwritten bits of paper, preferably written in some obscure Arab dialect, should make things interesting for the Blunt Ones who thought this up....
There are some countries which forbid you taking their blats out of the country (India, for one). What mechanism will be in place to cope with such an eventuality, I wonder...
Whoever dreamed up this penny-pinching morale-bruising nonsense should be strung up by the thumbs. Or nuts, if possessed....