Yes they are. I should know because when we last went to MNSSHP we had spent the day at the park and had checked out a locker for the day. We went back to GF to eat dinner and get ready for the party. Somewhere along the way I lost the key. I was horrified. But, after going back to the Magic Kingdom and talking to the cast member at the desk where you pay for your locker and having them call security and I having to describe everything that was in the locker, they got it open. Thank goodness for a patient DH.