Yeah well check in online and print out your boarding pass.
And then you just need to be at the gate 1 hour before take off. The gate closes 30 minutes before take off. Better to be safer than sorry so 2 hours before hand is grand.
Ryanair you can bring on 2 luggage bags, when I travel for games I only need the one. Aer lingus you are allowed 1 bag. Don't bring a huge suitcase with you, just a small one that fits in the over head department.
Check in online, print your boarding pass. One small suitcase and you don't need to go near the check in desks at all. Just straight through to the gate.