Originally Posted by Aviatrix
Went to the self-service check-in machine and got a message saying something like "You are already checked in, do you want another copy of your boarding pass?" Selected "yes", and ten seconds later I had the boarding card in my hand.
I've also done this a couple of times - once when the PDF boarding pass wouldn't print for me and once when I left it at home.
Shouldn't be a problem at all!