At least you are no longer doctrinated, so you saw it for what it was an annoying infringement on your family bonding, not some kind of sign that the JWs are right because God even reached you via the JWs down in NZ.
I have had weird travel experiences with JWs as well. I was in South East Asia for a few months and I came across not one, not two but three JW tracts in various countries. I saw the first one on the counter of a shop (no-one was manning it, I think JWs just dropped and left), the second was similar and it was on the reception desk at my accomodation (again looked like someone had sneakily dropped it there) and the thrid was that A4 love tract (I think it was in foreign language) blowing along the street... Even in a language you do not understand JWs and JW literature are unmistakable.
I hope you have fun with your family, NZ is beatiful