Yes, fuel vice, I can plan to an island with no alternate, and if all goes according to plan, I would arrive at the island with my contingency fuel (5% of planned tripfuel), my final reserve fuel (30 min. flight) and my ADDITIONAL FUEL (15 min. flight). In other words, in my MD-80 I would have around 3000 kg of fuel touching down.
There are other requirements thou,
MAX. 6 hrs flighttime,
2 separate runways available at destination
and the prevailing meteorological condition at ETA plus/minus 1 hour is such that the approach from the relevant minimum sector altitude and the landing can be made in VMC.