I believe they stay up all the time but only run at specified times. There was a sign on the front door that they would be running over the holidays. However I would suggest if anyone is making a trip just to see them to call and confirm the times. I did a quick search and came up with the link below. There were other links talking about the store and its history. As I indicated we just happened to run across the store and it was the first time for us.
http://laconiaantiquecenter.com/