This has happened a few times... Arrived late and whilst checking in at reception a porter with trolley has loaded bags up and before you know it is wheeling them off to your room.
Then we arrive at room and the porter person just stands there in the room!!!
I said clearly THANK YOU and he still stands there. I said I am sorry but I know you want a tip but I don't have coins on me.
It's just so bloody awkward when you arrive to a new country and haven't got smaller amounts of change.