As well as only knocking on decorated/porch light on/pumpkin outside, rules, it seems people are also unaware that tonight is the only night that it is acceptable to trick or treat.
On our town FB, someone has posted asking what places are best to go, and their child is ill so will be taking them tomorrow. Seems lots of people are happy for him to go to theirs, but when it's pointed out that most people will not entertain trick or treating on November 1st, other posters got very angry about that. Sad the child is ill this year, but shit happens and it is only tonight, better idea would be for the mum to go and buy the cheap sweets the shops will have tomorrow and treat her kid to those.
It certainly never used to be the case that people knocked on decorated houses, throughout the 90s and 00s kids knocked on every door.
It's my late dad's birthday today, so every Hallowe'en we'd go to celebrate with him, I'd get home, to my dark house, and my house was always egged. I once had callers after I'd come home again to the sight of egg everywhere, to a late caller, I had a bucket of water ready and nearly threw it over him...so they used to call at everyone and attack your property if you weren't even there. Luckily I didn't have a car as the next morning you'd see cars also targeted.
Luckily now I can sit with the light on inside and not worry, or turn on my outside light and partake if I choose, so it's much better now and makes me more willing to participate.