We go every year and stay at The Naviti on the Coral Coast. Great for the kids, and its "all inclusive", including all meals and drinks (including beer, wine and spirits - the local stuff - its drinkable).
Be warned but, they had a fire there in late 2012 and lost most of the main restaurant buildings. We went in February this year, and everything that was offered pre-fire, is still offered, just in different areas. Also, they commence major renovations in August this year to rebuild and revamp.
We love Fiji, and can't wait to go back again.
Cheers
Grant