Other Hotel Programs - FS or Mandarin

What are the best ways to get a deal at any of the FS or Mandarin Oriental properties? Are there codes or websites that are better than others?

Thank you.

Hi, we have a Luxury Hotels forum here where you question would be best asked. But briefly the two ways I get deals at these hotels are directly on their website, or through Amex Centurion (or Platinum) FHR travel.