Continuity mistake: After the tidal wave hits the island, there is a wide aerial shot of the hut. There is no palm tree tied to the hut, yet after they hear Gilligan yelling, there it is, with Gilligan on it.
Rescue from Gilligan's Island (1978)
1 continuity mistake
Directed by: Leslie H. Martinson
Starring: Alan Hale Jr., Jim Backus, Bob Denver, Natalie Schafer
Genres: Comedy
Other mistake: In this movie, after being rescued, the Skipper tells Gilligan they missed the days of miniskirts and Gilligan asks "What are miniskirts?" (As if he's never heard of them). However in the original series, an episode mentioned miniskirts and Gilligan said he can wear "minipants" since Ginger could wear miniskirts. He already should have known what they were.
Mary Ann: He didn't mean any harm, Skipper.
Skipper: Neither did the iceberg that sunk the Titanic.
More trivia for Rescue from Gilligan's Island
Question: How did Honolulu know that it was the castaways on that boat hut so fast? How did all those people get to greet them get there so fast?
Answer: When the Coast Guard chopper found them they radioed ahead, that they found the castaways that went missing all those years ago.