What problem did main character face in judy blooms fudge-a-mania?

In "Fudge-a-Mania" by Judy Blume, the main character Peter faces the challenge of spending an extended vacation with his quirky and over-the-top family, which includes his mischievous little brother Fudge. Throughout the story, Peter struggles to deal with the chaos and embarrassing situations that arise during their time together.