Am I correct in assuming that existing MR PP will be treated exactly as MR Plat come August and only move to PP with Amb if they fulfill the 100 nights + $20K ?
You are correct.
100-night SPG Plats will become PP Ambassadors
Marriott Plat Prems will only become PP ambassadors if they’ve also met the $20,000 spend target.
Retrieving data ...