I wouldn’t speak to the business directly. I would find out about the town code and then, I’d talk to someone at the town (maybe Code Enforcement Officer) and they can discuss with you what the next steps might be. Maybe they would measure the amount of light using some meters or something. If it’s a violation, that would be handled between the town and the business. I was recently, at *********, visiting some people in a lovely historic area near the water. They said that adjacent to the water, the town just put in a walkway with street lights. Apparently the street lights are LED and very bright. The people that live on the other side of the road, facing the water, were complaining that the lights are too bright, and the light is intruding into their houses. The solution the town came up with is that the lights are dimmed at around midnight so there is still light, but not blinding all night long.