Originally Posted by
margarita girl
Ah, sorry. Didn’t realize they couldn’t be used at Design Hotels at all. You cannot apply the 40K certs online so I assumed that was the problem.
Back to my original recommendation, I’d stay elsewhere.

Off topic... but has Marriott not fixed the 40K cert and online booking issue yet....?
I assume the issue you are referring to is what was discussed in this thread:
E-certificate NOT Attached AT ALL for 40K Cert Redemption