@onorio It’s a national holiday in both the North and the South and there’s big parades in Belfast and Dublin and smaller ones in other towns. Catholics might go to a special mass. Some people go out on the piss, some don’t: the bars and pubs are usually pretty bunged, and the student residential area by QUB goes absolutely mental. I’ve not been out for St Paddy’s since I was in my early twenties myself, too much of a hassle.
I mean, you wouldn’t catch us at some nonsense like dying the river or the beer green, but it’s a decently big deal here. Tourists definitely power a lot of it but locals might celebrate as well.