if i book 4 single nights with points one after the next and same account - if i then call Marriott will they give me the 5th night free? cant book 4/5 nights in a row for some reason its not available- but single nights are available.
Try calling to make orginal reservation and ask them to give 5th night free.
There are a few possibilities.
1 - The same room type is not available all nights
2 - Hotel blocking
3 - Marriot Glitch
If you get a good agent they should be able to credit the 5th night. Good luck finding one!
Other option [if agent cannot credit] is to pay for 5 and while you'll pay for the 5th ask them to create a case # indicating the nights consecutively were not available to he booked.
Then create a new case with Marriot while mentioning the original one.
A bit complicated but can work.