on the last voyages
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旅客要求变更乘船日期、航次时，可在开航前14天内办理下一航次的改乘手续，但客舱满员时不予办理。
If the tourists want to change the date or voyage, the changing procedures should be handled 14 days ahead of the due time. But if the cruise is full-loaded, your need will not be met.
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