Whenever I queue up most people seem to work on single queue basis , otherwise you could get behing someone who wanted a senior citizen , weekend return to Kyle of Lochalsh with stopover in Inverness.
BD
I am not sure you are fare when you refer to the grumpy one. Not all customers ( passengers ) are a delight to serve as you . But I do know to whom you refer. Let us hope he does not read this site otherwise might refuse to serve Black Country people.