Halloween has been known to me since I was a university student in China, from an English book, as an annual holiday (mostly for kids) observed on October 31, which includes such activities as trick-or-treating and costume parties.
My real experience of Halloween is during my business trip to California from China. It was a scary experience, since we had to try to find a friend’s home at a strange area late at night, around skeletons and jack-o'-lanterns and other scary decorations, and dog barks.
An interesting thing to me related to Halloween is that Chinese visiting scientist asked me in a late October why everybody was talking about heroin.
Many households who celebrate this event are prepared for trick-or-treaters and they are very nice to kids. However, there are reports, every year, of unhealthy or poisonous candies or even gunshots as the return of a door knock.
Halloween is a fun season. Enjoy this holiday, and at the same time, make sure that you and your facility are safe.