Jack Horner and the Dark Forces first draft: Part One

Jack Horner was excited. He and his family (well, most of them) were going camping in the woods of Maine.
Jack's family did this every year; it had become a tradition. But this year, his parents weren't going. They had decided that it was a waste of time and money.
He bounced up and down in the middleseat of his older brother, Roger's black minivan, singing the theam song of his favorite TV show.
Roger glared at him in the rearveiw mirror. Jack stopped. But soon, their three-year-old sister Marie had started up where he had left off.
"Good job!" Roger's voice dripped sarcasm. "I told you over and over to stop, and now Marie's being loud and obnoxius!"
"No, she's not," Jack's fifteen-year-old sister, Joy, retorted. She was still angry at Roger for winning the 'Who-gets-to-drive-the-car-for-the-cross-country-road-trip' argument. "She's just singing. I mean, if she were singing Jingle Bells then you could freak out."
And, to add to the tension in the car, Marie had to start singing Jingle Bells.
"No!" yelled Jack. "Christmas isn't for seven months! Can we focus on summer before we get to winter?"
Marie stopped singing, but Roger gave Jack his deluxe 'Oh-you-think-you're-sooo-cool' glare.
Jack glared at Marie, while Roger glared at Jack, while Joy glared at Roger.
Marie, who was looking out the window at the vast miles of farmland, croed out, "Ooh! Cows! Mooo."
Everyone tried to stay angry and glare at each other, but they couldn't. Their anger dissolved into laughter, and they laughed all the way to the cabin.
(This may seem like something that would happen only in a book, but not if one considers that the Horner family was only moments away from their destination at the given time.)