Originally Posted by
johnaalex
... but it is frustrating especially as the "missing" stays were all done on advance purchase rates, through Marriott.Com

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I had the same problem. I had to fax the printout of the reservation showing that Visa was used for the advance purchase (as there were no charges on the account, the hotel didn't provide a receipt when I checked out). It took 2 weeks for the correction to be made and the bonus to be credited to my account.