I live in Ontario and have a Great Escape or Child Adventure certificate that is expired. Can I still use them? GuestServices Updated July 11, 2017 19:18 Follow Yes. All Cineplex theatres in Ontario will accept expired Great Escape or Child Adventure certificates. Related articles Do Cineplex certificates expire? Can I redeem a Cineplex Admit One, Great Escape Or Child Adventure Certificate online? How Do I Contact Your Guest Services Team? Do Cineplex Gift Cards Expire? How Do I Get A Refund For My Movie Ticket?