Originally Posted by
Mr. Tickets
A guess would be that you will hit Platinum as soon as they record your MQD's for Platinum and then move to Diamond when you hit those MQD's. Unless you think you will hit them all in the same billing cycle.
If that is the case, you should be able to go in and choose both at the same time.
OP is not talking about MQDs, he is talking about the Amex waiver. He will be at 125k+ MQM by the time his Amex spend waiver hits in April. He would instantly requalify as Diamond at that time without ever spending any time as a [future] Platinum.