BTW I didn't think AIB had so many charges.
There is usually no difference where you use a Credit Card, either Europe or rest of world.
There is a big difference in use of Cirrus Card however. There are no charges in Eurozone - countries with Euro currency - other than tx charge of 20c/28c. Be aware though that you can easily overdraw as it's not online. You can quickly run up charges if you go overlimit !
Outside eurozone there is a charge of 3.5%, which can rapidly mount up. If you must use, please don't get small amounts .....better to get at least $200 a go, as the min charge is over €3.
Hope this clarifies some misconceptions !