"Yeah? Figure I was going to leave you sitting there a while?"
Heath dug out a wad of muggle bills from the pocket of his jeans and offered them over to the attendant - Muggleborn, he knew how to pay for things better than most wizards might, but he still overpaid and waved the bloke off when he tried to hand back his change.
He made up for the generosity by being demanding, though, ordering a complicated chai tea with a dash of espresso and extra vanilla, and he had to repeat it twice before the barista gave it a try.