Originally Posted by
Yllanes
If you have an AMEX Platinum, you always get the four hours if you book on the Hertz website, even if you don't use your AMEX to pay for the rental, you just have to use the AMEX CDP.
I was just denied the four hour grace period for a Hertz reservation made through AmEx Platinum Card Travel using my AmEx Plat card and Hertz President's Circle number. I double checked that the phone agent was using the AmEx Platinum rate. However, they did offer name more than six extra hours for about $7, which is much less than their rate for an additional hour. This is for a European airport location, to be returned to the same place.