The locks on your door to the balcony are 1/2 way up the door, just like a regular door. The big difference is the door slides to the left and it is very heavy!! I have to really tug hard to get it to move. There are also drapes you can pull across them to help keep the kids minds off of it until you are ready to go outside with them. With our grandkids they were so busy running all day in the clubs ,the only time they were in the rooms were to change clothes for dinner, nap and sleep at night. After they first saw the balcony they never really thought much about it again as they were so busy with other things. Also there are 2 TV stations with disney movies 24 hours a day so that will help occupy them for a few minutes while your in the room. If your child is very strong they might be able to unlock and slide open the door, but the odds are it will be too heavy for them.