Nadi is where the airport is located in Fiji. On the plane wear clothes with layers so you can take some off before disembarking as you will feel the heat as soon as you step off the plane (even at night!). All you will need is your bathing suit and a pair of jandals! Just like many citiies on the main land the sea is not as clear as it is on the outer islands so spend a couple of nights in the islands or take a day trip or island hopping as they call it! Learn their phrases, as the fijians are lovely friendly people and love to just say bula (hello) as your passing by and because they are such helpful people and great with children vinaka (thank you) is a must too!