If travelling overseas there is a possibility visas may be required.
Some cruise lines will advise of visa requirements for Australian and New Zealand passport holders approximately 70 days prior to departure and may issue required visas onboard.
It is a good idea to check for visa requirements prior to booking your cruise.
If you are not and Australian or New Zealand passport holder we strongly recommend you check visa requirements with the relevant embassy or consulate for the countries listed on your cruise itinerary.
If a visa is required you will need to have the relevant documentation regardless of if you plan to stay on board or go ashore.
Can you use a service like http://visalink.com.au/ .