travel : rental cars general
Rental cars and gas are expensive in Hawaii. Gas prices there will make the Bay Area seem affordable. :) Since 1) most of the parking garages in Waikiki have very tight corners and stalls and 2) the average speed on H1 Freeway is 55 mph (I swear!), if you want to save money and don't mind a smaller car, I recommend it as I feel they are easier to drive around Waikiki and downtown Honolulu. Parking in Waikiki is expensive (if your hotel even has it), you can expect to pay around $20/day.

If you are in town only for a night or two and plan to stay only in Waikiki and downtown Honolulu, you probably won't need a car (although I would try to find a carpool buddy for the ride to the ceremony). However, a lot of tourist spots are beyond Waikiki and downtown Honolulu (like the North Shore), so I think a car is necessary if you plan to do a decent amount of sightseeing or plan to stay for more than a couple days. TheBus (www.TheBus.org) is excellent within town, but if you go to more rural/suburban destinations, you may have a 1 hour wait between pickups. By the way, why do mainlanders find "TheBus" name so funny?? :)

Finally, while on the topic of cars, please note that rental car break-ins are common in beach parking lots. Please don't leave anything valuable in your car (even out of sight), try to leave it at home or somewhere safe in your hotel.

avis
www.avis.com

Hawaiian Airlines Wedding Wings Discount
Lower daily rates
Use Avis Worldwide Discount (AWD) D003737

various

Costco Member Discount
Lower daily rates and discounts for Alamo, Avis, Budget and Hertz. Must show proof of membership at pickup time.

click here for Costco car rental website

hotwire
www.hotwire.com

priceline
www.priceline.com

Discount travel website. You can either get quotes from anonymous rental companies (identical to Hotwire) or you can bid. If your bid and your price is accepted, you pay the full amount immediate and all reservations are final. If bidding sounds a little intimidating, you can always check out this website that lists winning Priceline bids, so you can get a sense of the minimum bid required and the car rental company involved.

click here for the Winning bid message board