I wish to know if I can use my Park ticket without an expiration date.

Please see the link below.
This is information about tickets without an expiration date, such as "Big 10 Ticket Book" and "Commemorative Passports".

As of May 31, 2023, we will no longer be handling Park tickets (Note 1) without expiration dates that were sold before July 2001 due to the decrease in the use of those tickets.
Please note that the reception desk may be crowded at the end of the handling period. If you have the tickets, please use them as soon as possible.

Note 1: Tickets such as different from business card size Tokyo Disneyland Passports, admission tickets, and Big 10 that were sold between April 1983 and July 2001, and without an expiration date are eligible.

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