I recently used the "FHR" discount code with a regular (Non Platinum) Amex at a Caribbean RC without a problem. I booked the reservation online. My question is does anyone have experience trying this in the US? I assume the worst case scenario is they make me pay the "regular" rate. I have been checking a couple RC's in FL and the FHR rate cuts the rate by 40% and includes breakfast. Thanks for the help!