Epic Card Stock – Grand Opening Retail Store Grand Opening & Marty Brennaman Autograph Signing, Marty appearing from 11am-1pm. The Hall of Fame Broadcaster is signing autographs from 11am-1pm. Autograph tickets must be purchased ($30 each or 4 for $100) in advance. Day of tickets will be sold but will be limited based on pre-event ticket sales. 100% of all …