Hi all,
Sending the father over Business Class this Christmas to my sister in Toronto.

He's well familiar with the airport having passed through many times, but this is his first time Business.

Can anyone advise:
1) What Business Lounge he can use flying Business Class Aer Lingus?
2) Where is it?

Sorry for the silly question, he's getting quite elderly and I want to ensure he has as smooth a trip as possible.

Many thanks.