I have a question and possible request for help finding a rate. For the preferred points are the number required for a given reservation based on the rate/price per day or is it the same for a given location/type of rental etc... regardless of the rate code used/total price?

If it is based on rate I'm trying to find a good rate for this reservation:

Pick Up/Drop Off at OGG (Kahalui, Maui, HI).
Pick Up 8/26 around 10:30am
Drop Off 8/31 around 2pm
Car: Intermediate or higher

Best I can find is $242.04 which I can then apply 1,800 points/day to remove the base rate ($27.70) from.