Have't been myself but my DD2 spent a month there last year. However two weeks were spent in a hosital in Christchurch having surgeries to cure an infection she picked up in Fiji. But her general impressions were highly favorable. The scenary is spectacular, the citizen's mostly pretty friendly and the hospital staff competent.

One interesting practice is that tourists often go to car sales held by private sellers, buy a used card to drive around the island then re-sell at the end of the stay. Actually cheaper than renting a car if you staying for a while. Their car was broken into, however, so petty crime does exist.

She did run into American ex-pats, one an ER doc, the other owned a tourist farm outside of CC.

If you go, don't forget to register with the US consulate or embassy closest to you. The ACS (American Citizens Services) bureau was very helpful during her hospital stay and even contacted the airline to try to arrange for more comfortable accomodations for the trip back to the states. The airline was not accommodating, however -- Air Fiji.

And, oh yes, lots of sheep...