JohnOClark, I found that out this past weekend. Reserved a car from Budget. We were flying a small plane but got socked in due to unexpected weather the same morning. Called Budget, advised we'd be later than initially planned due to weather. Asked if they wanted a credit card to guarantee the car or otherwise change the arrival time on our reservation ticket. Resounding "NO" was given: Agent emphatically told us if the internet reservation ticket was changed in any way, it would default to the current day's rate, not the reserved rate we set up. Therefore, Budget advised they would just hold our car until we arrived, up to 12 hours past the reserved time. Everything was OK for us thanks to a savvy agent.

Stranger Things Have Happened in the Fog,

mrspilot