We regularly visited a CG that also did the Halloween weekends (and typically multiple weekends) when our kids were small. We saw rigs and sites that were decorated to the hilt and as elaborate as any decorations you'd see on a sticks & bricks. By far the funniest was the camper who had a "mannequin" reclining in a chair by the road. Now sometimes when a resident could not be on site for trick or treat, a bowl of candy was left out for the visitors. This was the case with the mannequin HOWEVER said mannequin was very much alive and would suddenly come to life as an unsuspecting customer reached for candy.
Never with the little ones, though, just the smart-alec older kids and the adults with a sense of humor.........!!!!