Home and Garden What is a fun card at Main Event? Do main event cards expire? No, Main Event Gift Cards & e-Gifts never expire. Do main event game cards expire? No, Main Event Gift Cards & e-Gifts never expire. How do I check the balance on my Fun Card? My Card Balance Enter your Fun Card's serial number (located under the barcode) and security number in the fields (without dashes or leading zeroes) to check your card balance. Do main event fun cards expire? No, Main Event Gift Cards & e-Gifts never expire.