He did not leave from Build&Test side. I hope he will not be a Nascar Pilot. He is still in his 5. What is happening to these new kids? Growing so speed.
Find a reason to leave there before you go. Kids do not want to leave. Maybe a sleeping pill. :D Nooo, just a joke. But maybe? No No.. Last decision. :D Find another solution.
Rules are changing. You cannot enter inside without your kid. I arrived there before my wife and son. But I could not enter inside before they come. Interesting.