best island?

Hiya guys, ok I know this is open to opinion, but i'm heading to Fiji in mid Jan and just doing a bit of research about where to stay when I get there..

I have a week, enjoy a party - and also enjoy swinging in a hammock, reading a book, having a puff. Plan to do some snorkling and/or perhaps diving too when i'm there. Theres lots of islands to choose from, i'm bad at making decisions! can anyone sway me with tales of thier experiences? any advice would be greatly received. Thanks in advance! Jamie

Fiji...Fiji...Fiji.

PS Careful with what and where you "puff".