Travelling in my 20s and speaking English - “no I’m IRISH, IREland - not ISLAND, IREland - no I’m not English, I’m IRISH”, and always similar reactions, a huge change in demeanour to open friendliness, and then the usual , “Sinead o,Connor, Roy Keane!” Yes yes I’m from their country 
This was travelling in the Middle East. The change was enormous when they shifted me from English to irish. Frosty to warm!
I live in the UK now. I find England - obviously I like it, I choose to live here! - but as a nation, really a bit clueless about the world, about the UK and it’s role in history, clueless about Republic of Ireland, most people not even really knowing is it or isn’t it part of UK?
Religion is much more important then I realised here. The Christian churches play a big role in communities. That always surprises me! My perception was it was a nation of heathens 
Cricket is big in village life.
Hunting (on horse) is quite exclusive. In Ireland it’s not quite so separate from the community.
Homes/gardens are so well landscaped!!! It unreal. houses are finished, properly. Attention to detail is fantastic.
The landscape is strange. Thousand acre fields with no hedge, tree line, nothing. I always find this bizarre. And no small holdings. Farms are enormous.