When Carey sings her song, right before Cody comes in, Maddie has an orange dress on and not the pink one she wore before. But in the next shot she has on the pink one again.
When Maddie shows everyone to her "new" suite, the Amputator's shirt is untucked and tucked in several different shots.
The Amputator leaves his room angry, we see the door shut. Then the camera angle changes and Zack and Cody run in through an open door.