Originally Posted by
analogueman
Travelling from NCL-DUB with just a carry-on. Already checked in and boarding pass in hand. Can I just go straight to security or do I still need to go to the check-in desk for them to make sure my carry-on conforms to their guidelines?
What ticket type are you travelling on?
Most Aer Lingus tickets require you to check in your "carry-on" bag (for free).
If you arrive at the gate with a 10kg carry-on bag but without a ticket that includes the ability to actually carry the bag on, or if you didn't pay the extra fee for Priority Boarding, then you'll be charged £35/€35 at the gate, and you still won't be allowed to carry your case onboard.
EDIT: as this is presumably an Aer Lingus Regional route, you're subject to a more stringent carry-on size and weight limit (7kg). Make sure you're aware of the dimensions of your bag or you might find a nasty surprise at the gate. In case of doubt, check it in (for free) at the check-in desks; once you've gone to the gate, it's too late to avoid extra fees if it's deemed too big/heavy