I have a reservation for 7/21/13 and the cancellation policy says needs to cancel before 7/18/13 to get no charges incurred.
Now my plans changed and I did not notice the 3 day cancellation policy for this hotel as opposed to normal 4PM the day of the stay policy.
I am a platinum. Any way to cancel this with out any loss?
I have not called hotel or Marriott reservations yet.
If I can not cancel, can I modify it to a different hotel in different city on the same day?
Thanks

Moderator's note: I changed the thread title to reflect the favorable outcome. It would be nice to know which hotel did this good deed.