The light show does sound amazing, but people can be inconsiderate. That part is a shame.
At first, I was going to say that it reminded me of when they used to block our streets for the filming of a movie, television show, or even video, but that's not really true. Yes, there's an inconvenience, especially when you can't park along the filming area, but I have to say, I've never known them to be especially inconsiderate, nor have I ever seen a piece of trash after filming. So, your situation is more irritating.
It's amazing, in 2019, that people would litter, but apparently they do.
Will the light show stop running by the new year, do you think?
I'm glad that the cats that you have now are 100% indoor cats, too.
Love All Life, Thank You For Posting! :)