It hampers sales eventually because it does nothing to draw crowds into the shows. Craft show customers are not coming to buy Pampered Chef products or to enter a drawing for free window replacements, etc. They are coming to see crafts. I can hold my own against any type of competition at a craft show but if the customers are not there, there's no one to sell to, even if you are "constantly speaking to your customers." When customers are in my booth, it works best for me to greet them with a friendly smile and a hello and and then be available for help if they look like they want it. I walk away when a crafter talks to me too much and doesn't let me shop. I did my first craft show in 1987 and every year since then. Craft shows have changed drastically through the years.