I'm planning a 6-day trip to Fiji in late March and would like to visit the Yasawa Islands, but I can't decide which. I would like to see 2 different islands and Nacula stood out, mainly because of the Blue Lagoon Beach Resort. I don't want to go any farther north since I have limited time, so which other islands should I focus on? And which hotels/hostels are recommended? I am traveling alone on a flexible budget, but would prefer to stay in dorms in order to meet people. I would like to do some activities while I'm there, but would not plan those ahead of time.