The Book
- Write What You Know: Greg avoids swim practice by hiding in the bathroom. He notes that it's even colder there than in the pool, and wraps himself in toilet paper for warmth. Kinney has reported
doing the same thing as a kid.
The 2022 Animated Film
- In Memoriam: This movie is dedicated to Ed Asner, the voice of Grandpa Heffley, who died in 2021 prior to release.
- The Other Darrin: In the Italian dub, Vittorio Guerrieri replaces Alessandro Quarta as the voice of Frank, reprising the role from the first three live-action movies.
