I know that in 2019 you will only be allowed a bonus total of 15 elite nights no matter how many Marriott Visa/SPG Amex cards you have, but does anyone know what the policy is for the rest of 2018? You use to be able to stack the nights- getting up to 60 nights for 4 cards. I have both personal and business credit cards from both Chase and Amex for the Marriott brands and the anniversary date for one is 12/1/18. Will I still get the 15 nights for the 12/1 card? And will it be posted by 12/31 so I can keep my platinum status?