Enterprise Rent-A-Car has named four locations on O'ahu and Maui as hybrid branches as part of the rental company's addition of 5,000 hybrid vehicles to its nationwide fleet.

The O'ahu hybrid branches are in Waikiki, Honolulu and Kailua. Maui's branch is in Kahului. Available hybrid vehicles include the Honda Civic and Insight and the Toyota Prius. www.enterprise.com.

Discover Kaua'i: The Kaua'i Marriott Resort & Beach Club "Discover Kauai" rates start at $199 per night for garden room accommodations. The renovated resort includes a swimming pool, oceanfront dining, Kalapaki Beach and Jack Nicklaus Signature golf. Through Dec. 23, www.KauaiMarriott.com or 800-220-2925.

50th state savings: Hawai'i's 50th anniversary of statehood celebration means a 50 percent savings off rack rates at the Sheraton Kauai Resort and The Westin Princeville Ocean Resort Villas. Sheraton rates start at $285 a night for a partial oceanview room and $385 a night for a deluxe oceanfront room. Westin rates start at $312 a night for an island view deluxe studio or $425 a night for an island view deluxe one-bedroom villa. The fifth night is free for stays longer then five nights, and includes $50 daily food and activity credit and two-for-one surf lessons with Hawaiian Surfing Adventures at Hanalei Bay.

Through Dec. 25. 866-716-8141; ask for rate plan 5050.

Fall special: Castle Resorts & Hotels is offering a 50 percent WonderFALL savings for stays at its three Kaua'i properties. Castle Kiahuna Plantation & The Beach Bungalows in Po'ipu offers a south shore beachfront location, while Castle at Princeville showcases waterfalls from Hanalei mountains on the north shore. The oceanfront Kaha Lani condo resort is next to Lydgate Park on the east side. Rates start at $125 per night for a one-bedroom garden-view suite through Dec. 21. 800-367-5004 or www.CastleResorts.com.

Aston Hotels & Resorts savings: Aston Hotels & Resorts is offering up to 45 percent in savings during fall, with rates starting at $85 per night for a garden-view room at the Aston Aloha Beach Hotel. With seven hotels to choose from, Aston combines a range of accommodations on Kaua'i with exceptional service. Offer is valid now to Dec. 21. Blackout dates and some restrictions may apply. For more information, visit www.AstonHotels.com or call 866-774-2924.

Rainbow savings: Hanalei Colony Resort's "Rainbow of Savings" highlights include a 25 percent rates discount with a seventh night free, 10 percent off spa services at Hanalei Day Spa, 10 percent off food and beverages at Napali Art Gallery & Coffee Shop, and 15 percent off food at Mediterranean Gourmet Restaurant. The resort is also offering 25 percent off room rates on all ongoing packages. Two-night minimum stay required. Offer is through Dec. 23. www.hcr.com or 800-628-3004.

Whaler's Cove is offering savings up to 40 percent through Dec. 15. A two-bedroom, two-bath ocean-view condo with full kitchen, living area, and lanai is $295 per night (regular rate $479 per night). Stay seven nights or more and rates drop an extra $20 per night. Whaler's Cove offers daily housekeeping, free parking, an oceanfront infinity-edge pool and hot tub, barbecue area, outdoor shower, and direct access to Koloa Landing snorkeling cove. 800-225-2683.

Kama'aina deal on Maui: Maui Prince Hotel's kama'aina rate is $99 per night for a partial oceanview room. Rates are valid Sundays through Thursdays during September based on single/ double occupancy. Hawai'i ID required. 888-977-4623, www.princeresortshawaii.com.

Stargazer package: Guests at Waikoloa Beach Marriott for five consecutive nights receive one free day pass for two persons per room booked to the 'Imiloa Astronomy Center of Hawai'i. Visitors can enjoy the planetarium, exhibit halls, learning center, cafe, and museum store, plus learn about star exploration from cultural and scientific perspectives. The package starts at $199 for garden-view accommodations through Dec. 24. A resort fee of $20 plus tax per room per day will be applied to the daily room rate. www.waikoloamarriott.com, 800-922-5533.