When travelling on an international cruise that visits at least one foreign port, all guests are required to have a passport. Your passport will need to be valid for the duration of time required by the countries being visited in your cruise itinerary. You should confirm your passport validity requirements for the each of the countries included in your itinerary by contacting the relevant Embassies.
As a guide, most countries, including Vanuatu, Fiji, Papua New Guinea, Tonga, Solomon Islands, Indonesia, Singapore, Malaysia and Timor Leste, require visitors to have at least six months validity remaining on their passport beyond the date their cruise is scheduled to finish.
Some countries, including New Zealand and New Caledonia, require visitors to have at least three months validity remaining on their passport. However, if your cruise is visiting New Caledonia, it will most likely also be visiting Vanuatu which requires passports to have six months validity.
It is your responsibility to ensure you have the necessary documentation which permits you to travel. If you do not have all the necessary documentation, including the required validity on your passport, you may be denied boarding and no refund will be given.