Well, when I read the page on the RyanAir website about mobile BPs, it says that only people with EU ID can use them.
So, I'm in Chicago right now, on my way to Berlin, and I'm flying out on Ryan Tuesday and back Wednesday. I decided rather than trying to stress over finding an internet cafe, or other place to print, AND time it such that a seat I'm interested in seems to be the next available one, I just decided to check-in from my hotel in Chicago, that offers free printing.
I got 23A & 12D. No middle seat, of course, is the main thing, plus, it's only showing 75 minutes from gate to gate, so I'm sure I'll live!!
Thanx again for all yer help! I suppose, if I need to check a bag on the way back, I can do a re-check in, somehow, and add a bag?