I have an Icelandair flight from Paris CDG to Newark with a stopover in Keflavik. I checked in online for the first leg (to Keflavik) and have a boarding pass. As often for flights to the US, I can't check in online for the second.
Do I need to get the boarding pass for the second leg in Paris, or is it possible to get in in Keflavik (ideally from within the security area)? The check-in line in Paris is really long and slow, so I'm thinking it might be faster to skip the line here and get the second boarding pass there.