Morning,

I am due to fly through DUB on AA shortly - AA ticket throughout but the initial flight is on Aer Lingus from the UK.

Assuming I can't check in online (AA.com never seems to let me) will Aer Lingus be able to print off all of my boarding passes at initial check-in?

If not, is there an airside transfer desk at DUB which can do that?

Does Aer Lingus allow paid upgrades to their version of J (for the UK-DUB flight) on an AA ticket?

From what I have read, there is conflicting information about the process in DUB. I believe the order is TSA-style security, then the US border. I have GE, does that help me at all through the security part? Does my OWS assist with that at all? Or is it just a J/Y split? I'm in PE at present.

Sorry for all the questions. The DUB website just has a video which says "it's all good."

Many thanks.