Based on many posts here, it seems most of us put up with line cutting by myob and staying quiet.
What would happen if everyone called them out/didn't let them pass (this may be more effective)?
Would the social pressure be enough to discourage the practice?
What if a small child had to use the restroom and a parent left the line with them to take care of business? Would that parent and child be okay to "cut" back in line? How would you know the difference if you weren't close to them in line? (This was us on one trip and we just left the line, went to the bathroom, and then went to the end of the line. All four of us. Lesson for the kiddos, use the bathroom before we get in line!)