On flyertalk, I have not seen anyone mentioning about successfully have a single reservation incorporating more than 7 nights with a few paid nights in middle to use *7-night certificate*.
But I saw one guy mentioning this method on Marriott insider.
https://insiders.marriottrewards.com/thread/49888
I feel this strategy should work as we can use points redemption with mixed paid nights online.
Originally Posted by
estnet
I did, but the reps say different (and if attempt to pay for nights as I think described that would be invalid) - that said if it can be done online and works great - has anyone actually done this successfully - not just booking but actual stay where the hotel doesn't have an issue with it.