"My" Kev likes iced coffee, too. (I prefer my coffee HOT! ... even in Summer.)
I don't remember where we were, though I do recall it was a "Denny's", and Kev ordered iced coffee. The waitress was Very sorry that they didn't have that.
So ... Kev put on his "Sweet" smile, and asked if he could have a big glass full of ice with coffee poured into it.
He got what he wanted in less than 2min. And, yes, the waitress got a big tip.