Kids, if anything, are harder to write for because they are a more discerning audience. They will not stay with you if you go off on a tangent or if you give them extraneous information that doesn't serve the story. You really have to tell a tight story. You have to give them humor and suspense and believable characters. All those things that adults want too, but you have to be really on your game when you're writing for kids.
Rick RiordanVitellius would've given Percy an hour-long lecture on the subject, probably with a PowerPoint presentation.
Rick RiordanThe vulture Nekhbet, who'd one possessed my gran (long story); the crocodile Sobek, who'd tried to kill my cat (longer story); and the lion goddess Sekhmet, whom we'd once vanished in hot sauce ( don't even ask) - page 9
Rick Riordan