Visit in the North American Summer Season if possible. The South Pacific Summer (North American Winter) is very hot as with most tropical locations.
Bring extra hats, books, sunscreen and sunglasses (especially for kids). Things are expensive in the South Pacific and these are essential items for the relaxing holiday you will experience.
South Pacific Time is a bit of a different schedule so be prepared for some laid back flexibility. I’ve been to a local travel company 20 minutes before closing and found it already closed with not a person in sight. Buses have been over 20 minutes late and guests we have invited over have been over 1 hour late.
With the laid back schedule many stores and shops shuts down at 12 noon on Saturday and almost everything including grocery stores are closed on Sunday. Prepare in advance accordingly.
Check around for the best snorkeling spots. Some areas have even more fantastic sea life to be viewed then others.