I had this one Captain miffed at me for not showing up 15 min earlier to print the flight package. He didn't even say hello. I was still at least 5 min earlier than check in, mind you, and was as usual on minimum rest.
He didn't have time to finish his sentence that I was out, to get a coffee, just to return 7 seconds before official check-in time.
It was not the most entertaining duty of my career but hey, if that's how some people want to play it, be my guest.