I’ve never been to the South Pacifc, but if I were to go, I’d check out David Stanley’s Moon Handbook for the South Pacific.
” The most user-friendly travel guide to the South Pacific.” –Paul Therou
There are chapters on American Samoa, Cook Islands, Easter Island, Fiji, French Polynesia, New Caledonia, Niue, Pitcairn, Samoa, Solomon Islands, Tokelau, Tonga, Tuvalu, Vanuatu, and Wallis & Futuna.
David Stanley has spent over 20 years traveling in the region and knows his islands well.
Just looking at the book cover makes me look forward to the summer.