Hi, there!  How was your Halloween?!

Halloween originally came from the US, and in Japan we also celebrate Halloween, especially in Tokyo!
What is different between Halloween in the US and Japan?

In the US, children go around the neighborhood, knock on the door, and say "Trick or treat!" to get some candies.
Americans also decorate their houses extensively and make Jack-O'-Lanterns out of pumpkin.

Some college students go to bars or clubs and party like there is no tomorrow, but my impression is that generally speaking, Halloween in the US is for children.

On the other hand, Halloween in Japan is mainly for adults.
When I was little, some department stores and shops gave me candies, but I did not go around the neighborhood to ask for candies, nor did I make or see any Jack-O'-Lanterns.
So Halloween in Japan is not a fun day for children.

But adults are a different story -- grown-ups dress in costumes, go out to drinking places, and many of them party all night.
The central Tokyo areas of Shibuya and Roppongi become massive party towns -- a fun-filled event for adults!

Even Disneyland caters towards adults, and Disney Sea allows alcoholic beverages, so many Japanese girls go there to enjoy the Disney rides and Halloween celebration at the same time.
I feel like Halloween today has become an international phenomenon -- it is not a holiday to commemorate something special or honorable, but rather a day to give everyone an "excuse" to dress up and have fun!