Hi !
Thanks for the answers.
I've tried using both codes, but always get:
"The hotels in this location are unavailable for your dates and/or special rates. Try changing your travel dates and/or special rate request. For stays of more than 220 days, please call in the US 1-888-236-2427 or phone number for a reservation agent near you."
The hotel definitely is available at that time, so it's a problem with the coupon code. I use marriott.com to check, right ?
Any ideas?