These tickets are "Open Date Flexible Tickets". Tickets can be used on consecutive days or on different days in a 30 day period after the first usage. The biggest feature is that it provides the flexibility to use on different days. It is personal and non-transferable. When it is detected by the camera system that the same ticket is used by different people, the ticket is blocked. No refunds are made in any way, including cases such as ticket blockage, adverse weather conditions, and facility failure. Unused days are not refunded.