Hi everyone,
Just wanted to let you know that many of us used this web site to book our cars for the Get Lei'd cruise:
www.discounthawaiicarrental.com/
Be sure and click near the top that you need pier pickup.
We did great, and got a Dodge Neon for the day in two ports for $34 (including all taxes).
From our experience, save the money and don't get a convertible -- 1st they are everywhere, second gas is expensive, and third the rain seemed to pop up unexpectedly.
Harry