We leave for Fiji in one week...so excited!! I was hoping someone could tell me what to expect for weather. The weather reports say 85F at night, 60's to 70's in the evening. Trying to figure out if we need sweatshirts or light jackets, or not. Trying to minimize on luggage so clothing suggestions are greatly appreciated. We will be spending the majority of our time at Octapus and Blue Lagoon resort in the Yasawa islands and then 3 days outside Nadi. Thanks for your recommendations!!