I live in a new construction area...and on my end of the subdivision(not many homes built), there wasn't but 2 at the beginning...
I looked down the street (where there were no "lot gaps") and it looked like a conveyor belt of trick or treaters...
So I turned on my outside lights(funny, within 10 minutes so did the very few neighbors I have)...
...and then they came for that last burst to make it 33.