We are not Aer Lingus frequent fliers.
We are a family of 4 traveling- with 2 college kids who will not be thrilled about adding an app to their already full phones.
Should we all download the app? Or can we get away with just the parents on the app?

Thank you!

(crazy thing with Aer Lingus is that we had cancelled a flight and it is still on my online account under "My flights" like it's still active. I'm still getting upgrade offers on it. I called Aer Lingus to confirm that it has been cancelled and yet it's still in there. )