New Zealand - U.S. citizens staying less than three months in New Zealand do not require a visa. A visa is required for a stay from three to six months.
Australia - U.S. Citizens must have a valid visa to travel to Australia. A visitor visa will allow you to enter Australia to enjoy a fun filled holiday. For the cruie you will need to apply for the Visitor/Tourist ETA. You can apply at the website below. There is a fee of $20.00 US per person.