What currency to bring to Vanuatu?

I'm currently living in Japan. I plan to use "Goodies" to get Vatu, as well as the exchange counter at the airport. My question is, what currency should I bring into the country to be changed? Will Yen be OK or should I get some AUS dollars prior to leaving Japan?

Yen is fine. Dont change twice as it will cost you double the fees.

Thanks for that!