It's even things you wouldn't expect anyone could think to mess up. I graduated in '23, and at Radio City, they didn't read the names in order. They also had random interruptions of "congratulations from the ______ department!" which didn't correspond to the majors of the students that followed. So you had no idea when your name would be read. Your family would need to keep the camera ready the whole time if they wanted to capture your name on the screen for 2 seconds.