Why isn't maddie and Carrie in the suite life on deck?

In the show, Maddie stayed at the Tipton Hotel to continue her job. As for Carrie, she sent Zack and Cody to the S.S. Tipton's sea school (school on the sea) and continued living at the Tipton Hotel.

In real life, Ashley Tisdale wanted to move away from Disney Channel to do other projects. And Kimberly Rhodes moved away probably for the same reason.