If you chose December tickets + Mario tickets but have no way to go, you can try to contact the organizer to ask if the tickets can be extended to January. As for whether Mario Coupons can be used normally, it depends on the organizer’s arrangements for such situations. Generally speaking, if the tickets and admission tickets are within the validity period and the organizer allows extension or adjustment of the use date, then the Mario coupons should be able to be used normally. It is recommended that you contact the organizer as soon as possible to confirm specific matters.