Just found this article which might help you in planning for your trip.
Now is a good time to check with your credit card company and bank to see what type of fees they charge for foreign currency transactions. A few years ago when Chase started charging for these transactions, I changed to a CapitalOne Visa card that does not charge fees. I have a savings account with CapitalOne as well as both my business and personal credit cards. I use the savings account to take out cash since most credit cards charge interest on cash advances from the date of withdrawal, which I don’t pay since I’m using my own funds. I found my bank, even when withdrawing my own funds charged a hefty fee. I use my credit card for all other charges…always in local currency, not dollars.
I don’t bother exchanging money prior to my trip. When you exit the baggage claim area at Dublin airport, make a right and another sharp right and there is an ATM machine on the wall. If you’re more comfortable with a Bureau de Change, there is one in the baggage claim area at Dublin airport. The exchange rate will not be as good as at a bank or ATM, but if you simply want a small amount of Euros it’s another alternative.
Hope this info helps.