Andy - Hilton is the only program that goes both ways with miles and points. You could really scour the Marriott Rewards web site to find out. And not in their defense, because I hate it when email is not returned, but so many companies can't handle the volume of email they get. If you have an urgent situation it is best to call. Guest Services is in SLC and they are usually courteous and prompt. Good luck to you.
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