Going from script to screen can be a lot like getting burnt bacon grease out of a frying pan. It seems like it'll be easy, but by the end of the whole process, everyone is exhausted (and smells like delicious BLTs).
But unlike your kitchen exploits ("Screw this, I'm just going toss this pan in the yard, next to that crappy pasta maker somebody jumped on"), a film production is generally contractually obligated to keep marching forward ... even if the cops show up. Here are the kind of unforeseen horror stories that will someday be taught in film schools to weed out the faint of heart.
The New Pirates Of The Caribbean Movie Battles, Among Many Things, A Rogue Pirate
Walt Disney Pictures
It's already been four years since our last look at Captain Jack Sparrow -- arguably the most "normal" role Johnny Depp has ever played -- and it'll be at least another two before we finally see Pirates 5 on the silver screen. It's been hit with long-term delays a couple of times, as if Davy Jones himself doesn't want us to see it.
Early on in filming, things got a little hairy when a man dressed as a pirate, complete with a live parrot, pulled a knife on security as he tried to board the Black Pearl, Jack Sparrow's pirate ship. The man was able to get as far as he did because people thought he was an extra, since he happened to be in the one place in the world where a pirate costume is good camouflage. After making some threats, the man fled into the bushes, disgracing the honor of pirates everywhere.
Gold Coast Bulletin
Actually, he might have been dressed as your weird cousin who "went to Burning Man ... for six months."
Meanwhile, the film has been having several animal problems as well. Co-star Jack the Monkey, a capuchin who's been portrayed by several different monkeys over the course of the series, was placed in quarantine by Australian animal control. This should come as a surprise to nobody, because Australia has a notable interest in keeping any more potentially dangerous animals out. However, this turned laughable and then very serious when Depp's wife Amber Heard attempted to smuggle her Yorkies into the country. She was caught, and will likely face a hefty fine in lieu of jail time.