The line issues at MCO are caused by the same problems that effect lines at Disney, fast food restaurants, grocery stores, etc. There are just certain people who just choose not to be prepared or follow instructions. Following them will help expedite the process. At MCO, at least at the check point I always use, there is a TSA agent barking out instructions on what is allowed and not allowed along what has to go in bins to be inspected. This in addition to all the signage. But yet every time I fly regardless of airport, people just do not pay attention or just don’t care. It’s no different than the people who stand in line talking for 10 minutes waiting to get to the cashier, only to have no clue what they ordering when it’s their turn. Why do you think Disney now has people handing out menus at entrances? Maybe I am wired different, but I do everything in my power to make sure I do not impede the process of the people behind me.