This sounds like tons o' fun!
I guess it's finally time for me to grow up and not trick-or-treat anymore...
I think the only problem would be time, and ages. Obviosly, the older one's can stay out longer, but younger probably wouldn't be able to stay past 10-midnight...
I don't know. I assume that youngers wouldn't go because they're t-o-t themselves and so wouldn't come, and it would just be teens and older...I don't know.