Originally Posted by
kgkg
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.
If you want to change the category, change it now. Do not wait until the new system is on. So many uncertainties.