From the US Terms, section 13:
For Bookings with the Fantastica, Aurea or Yacht Club Experience, one departure date change can be made free of charge from the time the Booking penalty period begins, as stated in the above cancellation chart, until 30 days prior to departure. Any subsequent departure date change will result in a fee of $50 per person. The new departure date must be within 90 days of the original departure date. Any change to a date that is more
than 90 days from the original departure date is considered a cancellation and is subject to the above cancellation charges. Any change made less than 30 days prior to departure is considered a cancellation and is subject to the above cancellation charges.
booking-terms-and-conditions-231208.pdf