Card for Pacific Islands, NZ etc.
 

I will be on a cruise ship in September/October visiting New Zealand of five days (five places) and Sydney for about a week. En route will stop several places in Tahiti, as well as Samoa, Pago Pago and Fiji. I’m sure there is no “magic bullet” SIM card, but what card would be best for local calls as well as call USA, particularly for NZ and Sydney?