We were there for a couple of weeks and had originally planned to visit Ireland for a day or two, so I bought some Euros. I'd defer to Peter on this, but on two occasions during my trip, I inadvertently grabbed some of the Euros instead of pounds before I headed out to the pub. Both times the pub landlords laughed at me when I pulled them out and said, "We don't take that rubbish here." I did the same thing once when boarding a bus and got the same reaction. Unless you're planning to head over to France or Ireland, I'd skip Euros altogether.