A lot of kids from the city where I grew up went trick or treating well into their teens. There is a rich gated neighborhood that gave out full size candy bars and some even gave out dollar bills. That's why they kept going. But bc it was a gated neighborhood, it was ok. They knew the kids. If I were giving out candy I would kind of be expecting to see the neighborhood kids, whether it be a ritzy area like Brentwood or anywhere really. Not strangers, and esp no adults if they weren't out with children. Chaperoning kids is totally fine IMO.
But I don't get it, how are you tired of clubbing? You're only 21? We don't do the club thing anymore either, but I think we are too old. We are in our early 30s. We also really love Halloween, and we always have really elaborate costumes, but this year we are doing the Zombie walk in Long Beach, and the parade in West Hollywood. Both things are free!