Hyatt Regency Maui Resort and Spa's Three for Free package includes a third night free, a one-category room upgrade and full breakfast for two daily. The resort offers wildlife tour of resident penguins, flamingos, African ducks, swans, cranes, koi and exotic fish throughout the property; and tours of its $3 million art collection. Tour of the Stars, an astronomy program from atop the property's roof, is guided by a resident astronomer to view the Hawaiian night sky. The resort also offers group catamaran tours for snorkeling, sunsets and whale watching during season, as well as privately charted catamaran service. The Three for Free package is available through Dec. 19. Rates vary. 808-661-1234, 800-233-1234, www.maui.hyatt.com.

Sky Blue Canoe Outrigger Adventures guides visitors as they paddle a sleek outrigger canoe through a marine sanctuary along the Big Island's Kohala Coast. The all-age adventure includes bottled water, snacks, and two tour photos. $65 for adults, $50 for ages 8-12. www.skybluecanoe.com, 808-936-0000.

Hawaiian Walkways new tour along the Windward Coast of the Big Island explores waterfalls and coastal areas. The tour winds along towering cliffs and rainforest streams taking you towards Waipi'o Valley. Enjoy walking, shopping, and a picnic lunch along the way. Hotel pick-up available. $169 for adults, $119 for children, 9 a.m. to 4 p.m. www.hawaiianwalkways.com, 808-775-0372.

Atlantis Submarines' 48-passenger submarine takes passengers 100 feet below the Big Island's ocean surface to explore an 18,000-year-old, 25-acre fringing coral reef, its vibrant ecosystem and tropical fish. Tours provide narration in Japanese via headsets. Submarine tours cost $80 for adults and $40 ages (36 inches to 12 years. 808-326-7827, www.atlantissubmarines.com.

Dolphin Quest Hawai'i offers events for special occasions, including weddings and corporate functions, at DQ Village. The lagoon-side lanai is ideal for a gathering, complete with jumping dolphins. Contact Mark DiMartino at dqgroups@dolphinquest.org, 808-886-1234, ext. 1418.

Sheraton Keauhou Bay Resort & Spa's Firenesia lu'au dinner is every Monday. Entertainers present fire and drama under the stars while guests enjoy a Hawaiian lu'au, contemporary dishes and cocktails at the open bar. $69.95 adults, $34.95, ages 5-12. Children 4 and under free. www.firenesia.com, www.SheratonKeauhou.com.

Uncle Billy's Hilo Bay rates start at $77 per night; Uncle Billy's Kona rates start at $80 per night through Dec. 15. www.unclebilly.com, 800-367-5102.