Don't panick Ron ! I did when I lived in the USA. But at a small scale as the place I lived in was...well....lost in the middle of Nowhere hehehe. To be honest though, there was only the trick-or-treat part. No party.
lalouve, are you telling me that you have never experienced 'Trick-or-Treating', or handing out candy to little ghosts and goblins, or a Halloween party???