Originally Posted by
sinfonia
I definitely think you can upgrade by paying more points after Sep 18. I just think it will be converted to a new certificate and then you upgrade from cat 4 to whatever cat you want based on their new travel package pricing structure.
Thanks! The thing that I am worried is that if I change category after Sep 18, Marriott will ask me to pay the difference between the old TP and the new TP for the same amount of airline miles that I get. In that way, I have to pay a lot more points for upgrade the 7-night certificate.