Yebbut it helps if the customer walks in with a smile and a nice word for the poor underpaid woman who has to sit at a reception desk all day taking crap from the world and his dog.
True, but the customer is not obliged to be courteous. That's his choice.
The service provider better be, if he wants to stay in business.
And how much is the receptionist making, or how much crap is dealing with is certainly not the customer's concern.