When Pete rips Donald's uniform and hat in half. The next shot shows Donald Duck with a uniform that doesn't show any signs that it's ripped. It's unknown if Donald went to the dressing room and quickly got a new uniform and hat.
When Junior takes Donald's uniform and gets it caught in the elevator doors. He makes the elevator go down and gets Donald ripped out of his uniform and is undressed. Donald would actually get choked in the process.
After Pete tells Junior to come along, Junior stays behind and sabotages the elevator and steals Donalds uniform. Donald Duck takes revenge on Junior and spanks him. Pete is nowhere to be found. It's unknown if the Hotel Manager called him to come down.