I don't know how many countries celebrate this odd evening but it hasn't traditionally been part of Australian life and therefore, most Australians I think, still find it foreign and macabre. Our American and Canadian friends seem to be wholly into it with all its paraphernalia, even Christians. The church I grew up in frowned upon it and thought it all of the devil! Last year we had some high school pupils come to our door unexpectedly 'trick and treating' but I just ignored them. They turned our outside light fixtures upside down as a punishment for not responding to them and then left us alone. This year I didn't know what to expect but I had my wife bring inside anything outside the front door that could be interfered with. She thought I was unduly anxious about a non-event but I asked her nicely anyway. Being a dutiful wife she complied.
we look not to the things that are seen but to the things that are unseen --Paul, Apostle to the Gentiles