There are 64 human and 55 animal Audio-Animatronics in the attraction.
The first drop is 52 feet, at an angle of 21 degrees, and the second is 37 feet, also at 21 degrees. This was necessary to get the boats under the Railroad tracks, as the main show building is actually outside the tracks. Guests also get to go *up* a 90 foot waterfall at a 16 degree angle.
Near the end of the ride, the white haired prisoner is actually a replica of a janitor who worked there.
The fire effect: There is one peace of fabric hanging from a bar. Onto it is projected orange and red and yellow blinking light. Finally a Fan is added to blow the fabric slightly and it creates the fire effect. The fire marshal had Disney install an automatic shutoff in case of a real fire because the fake ones in the burning city looked so real.
The fog that drifts out from behind the boat in the "Battle" area.
Complete video of Disneyland's Pirates Of The Caribbean at DLDHistory.com