Plot hole: When the Slate Co. boss turns the lever in the casino from "WIN" to "LOSE", how could he know which games Fred was playing?
Flintstones in Viva Rock Vegas (2000)
1 plot hole - chronological order
Directed by: Brian Levant
Starring: Stephen Baldwin, Mark Addy, Jane Krakowski, Kristen Johnston
Continuity mistake: In the beginning of the movie when the letters of "Univershell" rotate around the Universal-logo globe, Earth is pictured as preglacial one-continent planet. When it's pictured as a background looking from out of the UFO it's the regular spaceview of Earth.
Fred Flintstone: Hey, was that an insult?
Gazoo: Well, if the shoe fits.
Barney Rubble: What's a shoe?
Gazoo: Than I guess it was an insult.
Trivia: Harvey Korman who played the part of Wilma's father in this movie is also the voice of the Dictabird in the first Flintstones movie.