Ohana Walking Tours offers two-hour guided tours of historic Honolulu. Wear walking shoes and bring water. 9-11 a.m. Saturday and Sunday. $15, military, seniors and students with ID. Park at Alii Place, 1099 Alakea St. www.ohanatours.org, 866-204-7331.

Hawaii volcanoes: January marks the 27th anniversary of Kílauea's east rift zone eruption. Throughout the month, the USGS Hawaiian Volcano Observatory, Hawaii Volcanoes National Park, and other partner organizations will offer guided hikes, talks, living history programs and educational workshops. Daily events will be posted in December on the Hawaiian Volcano Observatory Web site, http://hvo.wr.usgs.gov. 808-967-8844 or jbabb@usgs.gov.

Royal Kona: The resort offers a third night free with a three-night minimum stay in the Alii/Lagoon Towers through Dec. 24; rates start at $160 per night. Also, from $115 per night in the Bay Tower through Dec. 21 and from $135 per night for Bay Tower ocean view through Dec. 21.

Royal Lahaina: Resort rates start at $135 per night for a Garden View room; from $189 per night in a renovated partial ocean view room; and from $235 per night in a renovated Lahaina Kai Tower ocean view room. Rates are through Dec. 21.

Fairmont orchid: Reserve a room at The Fairmont Orchid and receive a second room free. The offer is for new bookings through Dec. 20, and includes guaranteed connecting rooms in the same category booked for garden view, partial ocean view and ocean view rooms. www.fairmont.com/orchid, 800-845-9905.

Art & Orchids B&B: The bed and breakfast is close to Hawaii Volcanoes National Park, Hilo and the Kalapana Lava Viewing Area. It features a new swimming pool with sea life mosaics as well as a waterfall guests can sit behind. Rates start at $90 per night. 877-393-1894, www.artandorchids.com.

Keauhou beach: Resort rates start at $139 per night and include a full breakfast buffet daily. The oceanfront property overlooks tidepools sheltering sea turtles and reef fish, and is close to snorkeling and surfing beaches. 877-532-8468, www.keauhoubeachresort.com.

Kona beach: King Kamehameha's Kona Beach Hotel offers 25 percent off one or two nights, or get your third night free. For stays in 2010, must book by Dec. 19, www.konabeachhotel.com, 800-367-2111.

Bougainvillea B&B: Bougainvillea Bed & Breakfast offers a double experience at a 20 percent discount to military personnel. The special Includes three nights at Bougainvillea B&B and three nights in a one-bedroom oceanfront Kona condominium from where visitors can book rental cars and activities. 800-688-1763 or 808-929-7089, www.bougainvilleabedandbreakfast.com.

Kapohokine adventures: KapohoKine Adventures' Umauma Falls Ziplines takes thrill seekers soaring over 14 Hawaii Island waterfalls. Brave a suspension bridge perched 100 feet above roaring rapids, or swing 160 feet above the water. Take five zipline tours (1 1/2 hours, $149), or seven zipline tours (2 1/2 hours, $169). Open daily starting Nov. 10. 808-964-1000, www.KapohoKine.com.