Here’s an 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. You’ll be able to convert to either Euros or Sterling and can confirm the transaction on their site ahead of time.
For those of you traveling to Belfast, you’ll need Sterling. Since I haven’t flown into Belfast, I haven’t used the ATM at the airport, but I’m sure there is one there. I have used the ATM at the train station in Belfast, and there are plenty of banks downtown. If you fly into Dublin, use the Bureau de Change in the baggage claim area.
Hope this info helps.