Hi, we are deciding on a trip to Fiji or Vanuatu (Santo). We have 2 boys 16, 13 & particularly interested in snorkelling & diving with some options of maybe hiking to a waterfall or cave in case boys want a break from snorkelling. In Fiji we have considered Wananavu or somewhere near Taveuni. We have been to the coral coast & wouldn't return, Plantation Island which we enjoyed but want to try a different part of Fiji. We don't need luxury but somewhere with nice surrounds but not priced over the top. I have looked at a lot of resorts. They all look lovely but hard to decide. Snorkelling direct from the resort is a must. Suggestions?