Recently we had an early flight out of IAD and wanted to spend the night, get a Hilton stay, and leave the car. Often the price of just parking at the airport can make a park, sleep, fly a pretty good deal. The cheapest Hampton deal I could find was $159, but I found a website that offered a local Embassy Suites for $109 including a week of parking. I knew I would not get stay credit . When I called Hilton to ask for a match, the CSR acted like I was crazy as that ES was asking over $200. I called the hotel and, although they would not match the price, they gave me a price of $129. I took it as I need some stays. This bargaining was on the day of the stay, so they knew their availability. Have you ever done that?