When my son was 6 and needed to use the restrooms at Pizza Hut, he went in and an older man followed him in. These were single toilet rooms.I came out of my seat so fast and was at the door. It was locked. Banging on the door and called the staff for help. Ready to take the door down, the man unlocked the door and wanted to know what the big deal was. The big deal was my son was 6 and he was in his thirties. He said they are both "boys". Exactly, with an age discrepency that prohibits this type of behavior. Very glad I was watching closely and employees were there to back me up. Keep your kids close and a watchful eye at all times.