When Cody has just sat down to talk to Zack after collecting loads of towels. In the first scene, the towels are on the chair in front of him. In the next scene, when Cody leaves to practice, the towels have vanished. And in the next scene, when Bailey and Zack are talking, the towels are back again.
When Moseby hits a bowl of oranges, it seems that only a row of oranges fell into the towel-gun (that is; around 4 oranges). However, when they stand up, the towel-gun is filled up with oranges.
Bailey sincerely says that she has never lied before, but in _"The Suite Life on Deck" The Suite Life Sets Sail (2008)_, Bailey lied about being a boy.