And here is some great advice from the SDOC blog;
Finally, be prepared to meet some regional neighbors you don't see every day. These last words I posted a couple of years ago but they've become fresh as I come off the costume parade at Coralwood last week:
With Halloween upon us, please keep in mind, a lot of little people will be visiting your home.
The child who is grabbing more than one piece of candy may have poor fine motor skills.
The child who takes forever to pick out one piece of candy may have motor planning issues.
The child who does not say "trick-or-treat" or "thank you" may be non-verbal.
The child who looks disappointed when they see your bowl may have an allergy.
The child who isn't wearing a costume at all might have a sensory issue (SPD) or autism.
Be nice. Be patient. It's EVERYONE'S Halloween.