Been There Done That question

The book revolves around a boy reliving the first day of summer camp over and over. It starts with his mother taking him to an area where all the kids get on a bus to go to the camp. When he gets there they assort the students into different teams with animal names. I remember seeing "Been there done that." Somewhere in the book, I don't know if that was the title or just a line. All help is appreciated. Thank you!