To remain in the program, Castaway Club Members must book or sail on at least one eligible cruise within 5 years of their last Disney voyage.
In the new terms and conditions, it states:
Membership in the Program will automatically terminate without notice if Member does not book or complete an eligible DCL cruise within the “Activity Period.†The Activity Period shall mean the five (5) year period after debarkation day of the Member's last eligible DCL Cruise.
There is another section in the terms that states Disney Cruise Line can change their mind, but it's not clear on how one would qualify for any exception.
However, DCL may (but is not required to) extend the Activity Period and/or continue making Program Benefits available to Member if Member does not book or complete an eligible DCL cruise within their Activity Period; such decisions shall be in DCL's sole discretion.
