I made resevation with Priceline for a rental car at Hilo Airport Hawaii. Requested that the reservation for the pick up be moved to Kona on the same island for the same date and time. National Car rental had no problems with change, but insisted that Priceline needed to change reservations. Priceline stated that they could not change the reservations and that the rental car company needed to change the pick up location. Priceline refused to change the pick up, give me a credit or cancel. BTW, I received a better rate going directly to another car rental website.
Now I know why Priceline will not change location pick up. National emailed me and told me that if I do not pick up car, they do not get any payment, which means Priceline keeps the entire amount !!!