A quick iternary:
Saturday - land in Honolulu, board ship
Sunday - ship arrives in Hilo (big island). We rent a car and go to Volcano National Park, other sites
Monday - ship arrives in Maui. We rent a car and drive road to Hana.
Tuesday - ship remains in Maui. We check out West Maui beaches.
Wednesday - ship arrives in Kona (big island). We do Captain Zodiac Snorkel excursion.
Thursday - ship arrives in Kauai. We rent a car and go to Waimea Canyon. That night we have Luau excursion.
Friday - We go to local beaches in morning, ship departs in afternoon.
Saturday - We arrive back in Honolulu. We rent a car and go to Pearl Harbor, USS Arizona. Our flights leaves that night (red eye).