I agree, it's a bit too early. I'd wait until after Thanks Giving to turn them on (but I don't do a Christmas display)
I do, do a Halloween display and that went live on Oct 1st, but to keep the neighbors sweet I invited then to a pre-view test run on Saturday Sep 29th.
I emailed all the folks on my street, explained what I was planning, what to do if they had an issue with cars, noise etc and if anyone wanted to see how it worked to drop by my House.
We had about 20 Neighbors come out to watch, and had a few beers together. Was a good experience.
On Halloween night many neighbours came out to hand out candy and enjoy the lights and many commented that they liked my display, so it's good to keep them happy.