When flying from New York to Australia, staying a month, then flying to New Zealand, and finally BACK to Australia - what kind of visa is required?

Question

As American citizens, do we need two visas? A reentry visa for AU? How does this work? I've received conflicting information.

Answer 1

As an American citizen you need an Electronic Travel Authority to enter Australia. This serves in lieu of a visa and allows you to visit as many times as you wish for one year after issuance, for up to three months per visit.

You do not need a visa or advance authorization to visit New Zealand under its Visa Waiver program.