I enjoy looking at the way people are decorating for Halloween in your country even if we don't do that a lot in France ^_^ Well, a few years ago it was a fashion coming from USA but I have noticed it tends to disappear...the shops were full with halloween decorations and it was more something commercial than a real desire to celebrate something that is not ours, culturally speaking..I think we find that funny when the kids are young and also the young adults take this as a theme for a fiesta, but it has no real grounds by us ;-)
It is a holiday promoted by the marketers to get people to buy more. When I was a kid it consisted of carving a pumpkin, creating your own costume at home with possibly the help of your mom's sewing machine, and getting candy or apples or baked goods from your neighbors when you went trick-or-treating. We were only allowed to eat the baked goods if they came from the home of someone that my mother knew. We wore our costumes to school and in the afternoon the entire School would parade through town to show off our costumes and all of the parents and grandparents and business people would come out on the streets to watch us go past. It was quite the event! Like everything else it has become so commercial, with expensive costumes and decorations and big candy bars.