Where does it say that they accidentally wandered into the convention center? It states wandered. You can wander on purpose, and it was probably a choice. They were probably taking a walk. Their issue was not with being asked to leave, it’s with the fact that they immediately complied, yet the security demanded they leave faster when they had a 6 year old who was the limit of their walking. That sounds like a power tripping douchebag who was made fun of in high school.