How people called me sir, even though I was 12 at the time. It wouldnt happen here in Ireland.
How large a portion of a meal was.
How heavy of a presence security and police where.
Then just the usual stuff like gettig used to the money. the nasal accent of a new yoikah. there are so many homeless in New York...one distrcit alone is worse than most of Dublin.
But my initial shock was as I already said was the level of security measures in place, before we'd even gotten on the plane. Like Biometric eye scanners etc. Ive just never personally experienced it before.