So I have some frequent flyer miles due to expire and decide to book some travel and get the miles added to my account to keep that from happening. Like most, I went online to book the reservations for hotel and rental car etc. Now here is the interesting part. I did a search for a cheep rental car and ended up on //travela.priceline.com/rentalcars/.... which apparently is a link through Travelocity to Priceline. I went through all of the screens and entered all of the information requested to reserve the car. On none of the screens was there a place to enter my Frequent Flyer account number. So when I want to pick up the car from Alamo, I gave the number to the counter girl and thought all was well with the world. When the miles didn't show up on my Frequent Flyer account, I began the search to find out why. According to Alamo, the miles must be entered on the reservation screen, they can not enter them (so I was told). So I contacted Priceline and they said that there was a place but when I really questioned the customer service agent he admitted that there were some partner screens where you can not enter the miles. I have had problems with Priceline in the past so I guess I should not be surprised at this. Bottom line I think you have to be super vigilent and ask a lot of questions to make sure that you will receive the miles with your rental/stay etc.