Lol I don't know what actors you're marketing to, but if an actor is sitting still long enough to have a light shined on their face, they probably aren't an actor that will be invited back next season.
Great concept, but properly lit haunts won't need something like this, in my humble opinion.
Also, is there a way to secure the light to the clothing? Seems as if this would bounce around a lot and be counter-productive, especially for many professional actors that I know.... If they sit still for more than 5 seconds it's a miracle.