We originally booked through the future cruise desk while onboard our last cruise. They said the other rooms were only available for the 10 day sailings, not the 20. When we got home, we mentioned it to our TA, and she was unable to access the other rooms that we wanted for us. I just looked again today, many rooms available where we want on both 10 day sailings, but not available for the 20 day. Sad. But, now the price has also gone up, so I guess that would be another issue. Guess we will have to be happy with where we are. At least we'll be cruising!