The only time you'll get that here is when Ireland are in a major tournament (not often) like the World Cup or European Championships or the Six Nations. Even then, if you're not into it people will just accept it. You just give a cursory COYBIG and everyone's happy. Flags do get hung out, but nobody's gonna lynch you if you don't do that. Of course, don't dare hang a Union Jack out if you happen to be English living in Ireland!