I don't know. I traveled with my kids when they were young and no issues... aside from my son wandering off the minute my head was turned. One when he was about 4 the airport police came to me with him. I guess he figured out that if he dialed 911 on the pay phone a nice lady would answer.
Then there was the time going through airport security at MCI. Of course being midwest folks the inspectors (not TSA there at the time), had to be polite and carry on a 1 minute conversation with each person in line. When there are 120 people standing in line that works out to oh... about 2 freakin' hours you idiot.
So the gate is announcing "Party of two_________, this is your final call." And they chose my son (again, about 4), for extra security. "Raise your hands." So he raises his hands like he is surrendering. "Party of two________, final call." ARRRRR!. "No son, not like that, but to your side like this." Inspector raises then lowers his arms. "Party of two_________, gate is closng." Oh for crying out loud. I try to step in and show him what they mean. "Sir, step away from him or you will have to go back through screening." So my son raises, then lowers his arms just like the inspector showed him. "No son, raise them, and keep them up." So he raises them, then raises them up all the way. "No son, raise them up to your side and keep them there." ARRRRR!!! "Party of two___________, gate is closing." He finally gets it, they wave their wand over him, give me the thumbs up and I scramble.
One time they did not have seats together, so they put me and my daughter in one row, and my son between two hot girls a few rows ahead. Lady next to me asks if I would like her to change seats with my son. I go up to him and ask if he wants to change seats with the nice lady in my row. He shakes his head emphatically "No". Again, he's about 4 or 5. On the flight my daughter and I hear him telling the girls he's 11. Man, he was working them hard.
Daughter is finally old enough for first class. A few times traveling by herself she got to sit there and man, was she spoiled. Next time we traveled together we walk through first class and she points out the empty seats. "Sorry hon, Joe is not old enough for first class." She responds, "Well, he can sit in coach, I'm sitting here." Ummm... nice try.
Finally, one time we had to be someplace so we went SouthWest. We got in line to board and my daughter says, "Dad, we can't board yet. They haven't called our names."
Ahh.. memories.