A successful series director who asked to remain anonymous remembers having filmed with a boy for the role of "a six-year-old who has lost his mother and is living with a father who can't come to terms with his wife's death."
"Pretty heavy stuff, and I was very worried about how I would get across to this boy all of the complex emotional turns that were needed from him," the director said.
"One day I saw that he was playing with Pokemon cards on set and so I sat down and had him explain who all the characters were. There were a lot of them but by the time he was finished, we were friends... It helped both of us."
Children are limited in their contracts to about nine hours a day on set, but it's invariably an intense day.
They can be required to start at dawn and, on top of all the usual pressures of acting, they have to find time to squeeze in three hours a day for schooling.
"There's millions of dollars involved — each minute on the set costs thousands of dollars — then you ask a 10-year-old to behave professionally and be at the level of Tom Cruise," said MacRay.
The manager said he considers 12 auditions or more a month "too much" for his young clients.
Child actors have to learn to keep their feet on the ground amid the sudden glare of the media spotlight and previously unimaginable wages, which isn't easy if they have pushy parents trying to live vicariously through their newly famous offspring.
For every Leonardo DiCaprio or Natalie Portman who transitions successfully from child star to adult actor, there is a Lindsay Lohan or Macaulay Culkin, who cracks under the pressure or just falls by the wayside.
"It's about the parents, managers et cetera being in tune... they need grounding in the family. The teens I work with are very reasonable," said MacRay.
Edouard Holdener, a 13-year-old French actor living in Los Angeles, has always dreamed of being an actor and is being educated by correspondence course to free up more time to dedicate to his passion.
He has already begun chalking up his first feature films, including a leading role in independent picture Hunky Dory (2016) and has just shot a series for Amazon with Jean-Claude Van Damme, due to come out in the fall.
"I love preparing for auditions, immersing myself in the script and learning my lines, but it's hard when you don't get picked for a role. You cannot help being angry with yourself," he told AFP.
Among his biggest regrets is getting to the third round of auditions before missing out on Netflix's Stranger Things — which is up for five Emmy Awards, including for its 13-year-old star Millie Bobby Brown, at Sunday's ceremony in Los Angeles.
"I'm still sad when I see the posters," he said wistfully.