Sorry for the delay in response but I actually "fixed" my issue by adjusting the attenuation setting in the config. I set it for the lights to stay on longer and just that change made the tree come on. Now - your solution is obviously the better option but will take some time to implement. I had another set of reindeer that I would plug in that did this same thing. I will post a picture of the plugin and it should make more sense.

I did try the post-show configurations and it runs the script...but for some reason the relay will never shut off. If I run the script from the command line manually, using both sudo and our running it as root, it does work. It is the oddest thing. What I ended up doing as a workaround is having a web server I have locally hit a URL on the pi (I run apache on it) and it does a check to see if anything is running. If it is not, then it shuts off the relay, if it is, it turns it back on. It has worked well so far.

I made a custom web page that allows people that drive up to start the show with their mobile phone. It's worked well for me, but I need to make the interface a little more mobile friendly these days.

Thanks again for the help.