As a side note, does this just go on in a loop, or is it more something that you show people every now and then, and have a more subtle pattern? It personally would not really bother me but I know a lot of people like to make a fuss about silly stuff so could see them be annoyed. Those type of people are the reason we can't have nice things and why we have ridiculous bylaws about what we can't do on our own property.
I wrote a little scheduler daemon that automated the schedule of the show.
Show times run between 6 PM and 9 PM Sunday through Thursday, and 6 to 10 on Friday and Saturday. During show times, a one minute intermission plays before Frosty and a 1.5 minute intermission plays before Star Wars. During this time, only a small subset of the lights are turned on; they are are 20% brightness and have a simple gradient/chase animation. A VU meter is animated on some of the house, too, to reflect the background music. One of the "tune to 89.5" signs blinks slowly, but very brightly during intermissions. During intermissions, we announce the show times, the next song, and ask you to stay to one side of the road to allow traffic to flow through freely, and to keep your radio at a reasonable volume. This whole thing loops until the show schedule is over.
For one hour before the show starts (while the sun is on its way down), we have a generic sequence that is almost identical to the Frosty intermission, except it doesn't say that Frosty is next; it just mentions that we have Frosty and Star Wars: The Light Awakens. We play this same sequence for thirty minutes after the last show so that stragglers know when to come back.
For one hour before the pre-show sequence, we broadcast the same audio, but the lights are off. We do the same for half an hour after the post-show sequence.
As far as those people you've mentioned, my neighbors have been incredibly supportive. They truly love it. The guy directly across the street from me even lets people park in his driveway to watch, just because he wants them to enjoy it. The guy next to me got on my roof and helped me mount some of my lights, which is awesome because I'm afraid of heights and a big wimp in that area. Another neighbor let me run wires and props through her yard (which I later removed, due to technical complications).
People have been coming from over an hour away to see it. It's kind of crazy!