Hello and thanks for all the great info here. I need to book a car in KOA from 1/15 to 1/19. The best base rate I can find is from AWD A074800 (Citicorp) which comes out to $134 for an intermediate. Most of the coupons I've tried, however, have not worked due to this being a Hawaii rental. Any idea what AWD/coupon combination may give a cheaper rate or an upgrade?