Schauspieler
Jason Drucker (Greg Heffley), Alicia Silverstone (Susan Heffley), Tom Everett Scott (Frank Heffley), Charlie Wright (Rodrick Heffley), Owen Asztalos (Rowley), Dylan Walters (Manny Heffley), Wyatt Walters (Manny Heffley), Joshua Hoover (Mac Digby), Chris Coppola (Mr. Beardo), Mira Silverman (Brandi Beardo), Carlos Guerrero (Luis), Danny Vinson (Hog Man), Stephen 'Big Steve' Dupree (Tall Farmer), Neva Howell (Farmer Lady), Ricky Muse (Butter Vendor), Taylor St. Clair (Carnie), Kurt Yue (Fake Dad), Jacinte Blankenship (Security Guard), Beth Keener (TV Reporter), Alma Kent (Teen Bystander), Mimi Gould (Meemaw), Alexa Blair Robertson (Cute Girl #1), Courtney Lauren Cummings (Cute Girl #2), Robert Hendren (Motorcycle Cop), Sofia Bowers (Pigtails Girl), Emma Wetzel (Country Fair Girl), Elijah Marcano (Corny's Host), Jody Thompson (Uncle Gerald), Stephen Ruffin (Gamer), Anthony Ianitello (Diaper Hands Cosplayer), Kimberli Lincoln (Mrs. Beardo), Nathaniel Dickson (Brandon Beardo), Jake Sterner (Brent Beardo), Bobby Akers (Gaming Expo Attendee), Lariah Alexandria (Corny Kid), Madison Alsobrook (Expo Kid), John Jacob Anderson (Video Game Vendor), Cassidy Balkcom (Corny's Waitress), Taylor Barton (Fair Kid), Alicia Beshears (Fair Teen), Kimberly Blaurock (Professional Cosplayer), Joshua Booker (Gaming Expo Attendee), Maiya Boyd (Corny Heeley Kid), Michael Bunch (Laughing Corny's Waiter), Benton Burnett (Cowboy Family), Randy Burnett (Cowboy Family), Jamel Chambers (Expo Gamer Attendee), Jeremy Chesser (Corny Patron), Kristen Danielle (Expo Gamer), Aerielle Dodson (Goth County Fair Patron), Olivia Dodson (County Fair Patron in Floral), Jacob Evans (Expo Kid), Bina Forbes (Corny's Parent), Juan Gaspard (Festival Vendor), James Gill (Steampunk Giant), Apollo GT (XBox Vendor / DXRacer Player), Ben Hammock (Fair Employee), Lucky Harmon (Driver), Simone Kiffany Jenkins (Passenger), Kenneth Jones (Mechanic), Tegan Jones (Party Guest), Jay D. Kacho (Man Splashed by the Pool), Jeff Kinney (Man at Player Expo), John Merical (Driver)