You may also luck out by asking CMs at CRO to please help you find a good deal. You may have to call several times until you meet someone who goes over and beyond for you, but it has happened to me! I recently booked AKL, savanna view for the end of August with no codes but the CM was kind anough to pull a great deal that I am sure will be publicized under some code close to that date.
Wanda