Kings Dominion (KD) Discussion Thread in Theme Parks, Roller Coasters, & Donkeys! Posted December 15, 2013 On the 2nd day of Christmas, #KD40 gave to me: A 40th Celebration Collector Pin Trading Program! Be a part of the celebration by collecting all of the 40th Celebration pins! The commemorative pins will be released on select dates throughout the year for you to collect, trade and enjoy! What pin designs would you like to see? I'm pretty excited about the park selling pins. It's about time more Cedar Fair parks jumped on the pin trading bandwagon. - Holding out for new flats and Christmas event next year in the coming announcement.