Friday, watch the Providence Bruins, the top affiliate of the National Hockey League’s Boston Bruins, take on the Portland Pirates at the Dunkin’ Donuts Center. As part of a special promotion, the first 2,000 fans to arrive will receive a free koozie, courtesy of Uncle Bob’s Self Storage. Game-goers looking to save a few bucks can also take advantage of the Bruin’s $5-off Friday deal. Those who purchase 100-level seats online will pay $27 per seat instead of $32.