Just how tough is it to actually book a stay using a Marriott 7- or 10-day hotel certificate? I appears you have to stay consecutive nights at ONE hotel--I'm sure Marriott sees many of these never used.

If I am going to stay seven nights at one hotel I would want a resort location, and I'm sure its a mad scramble to actually get the booking.

How many nights out can you book with Marriott? Suppose you can only get 6 nights of award availability for a 7 night certificate--does that make the booking invalid? Do the better locations book up so fast that you have to sit by the phone waiting for the next day to open up? Any tips from those who have been there would be much appreciated!