I may be in Greenwich Village to see all the freaks!
Minimus, in my experience, that is every day not just Halloween. I visited there with a family from a very small conservative town. I thought they would get whiplash from turning their heads so often.
I'm not too fond of Halloween because dangerous people use it as a venue to hurt children and adults as well as destroy property. I would find it more enjoyable to have costume parties at other times of the year, and have done so.
Whatever you do, be careful and watch your children.