These lie both between Vanua Balavu and Fulaga and between Fuluga and Suva. There are scattered places you can stop, and you can research them best in your the Mariners Guide to Fiji that you got when you checked in. (If you didn’t get one, see it on the Soggy Paws site). There is one island between Fuluga and Vanua Balavu that has internet and people stop there just for that. We decided it would not be worth it for us, but we did use the signal to post a blog as we motored by.
As far as islands between Fulaga and Suva, a couple of them sound intriguing and we would have stopped if we’d gone that direction.