Invisible Movie Bonus Hint

This week's Invisible Movie, from 2003, was the first in hugely successful series. It was originally based on one of the rides at the Disney theme parks.

As a hint, most of the location filming for this movie was on the island of St. Vincent where they built built three piers and a backlot as the settings for Port Royal and Tortuga. (I won't tell you in what the sea you'd find St. Vincent, since it might be too much of a giveaway.)

Simply identify the movie and turn it in with your first answer at Trivia for five bonus points.