I've heard plenty about how the americans are this and that. However, I'm over in Boston and I'd have to say that the Americans are hands down the friendliest people I've met especially when asking directions. On numerous occasions (I get lost easily

) I'd ask one guy and he'd actually stop a few other passerbys for me and ask them on my behalf.
You could be there with three or four people debating the best way to get where you're going. Other times, you might be just looking at two different streets and they'd ask you if you were looking for a place. I'm not saying the Irish wouldn't give you directions but they generally wouldn't be as helpful.