Originally Posted by
londonfin
So the MR bonus is "per new card" rather than once per person, no matter if multiple cards? Thanks for the info as that pays for the first year's fee right there.
AMEX treats the MB Platinum as a distinct product from the traditional Platinum you currently hold. Generally, the rule is one bonus per card type (i.e. Platinum, PRG, etc) per person, though the specifics differ and are set by the terms pertaining to each application (which you should read before applying, of course).
In this case, you should be eligible for the MB Platinum bonus, regardless of whether you've received the traditional Platinum bonus already.