Do the kids go trick or treating in your part of the world?
Not much anymore. Most parents and schools have Fall Carnivals and dinners. If there are any trick or treaters, it is usually a group of teenagers (not neighborhood kids) and it would be best to not open your door.
Did they, but no longer because of danger?
Yes, either real or perceived danger.
Is there some kind of 'vandalism' night just before or after?
No, not in our area, but I have heard of it in other areas.
What was your favorite costume as a child?
Princess! (you mean there were OTHER costume choices?
)
Do the accompanying adults get their treats (i.e. a glass of alcoholic beverage.)?
When I was growing up, parents always received a beverage (beer - wine - soda - or coffee/hot chocolate).
That was one night that both mom and dad took turns to take the kids out and had fun little arguments about who got to take the kids first.