I know the Magic Kingdom version gets a lot of flack for being the shortest version, but it does an amazing queue and prior to 2006, a narrative that was different from the other versions. You see, the Magic Kingdom queue has some nice details implying that the fortress you're walking through is in use and about to be attacked. You used to be able to hear the sounds of marching Spanish soldiers, singing pirates who infiltrated the fortress, a prisoner in the dungeon playing the guitar, a guard playing the guitar above the fountain, pirates digging for treasure in the cave, and sea gulls. The ship off in the distance from the load dock is implied to be the same one battling the fortress later in the ride. It was also implied that the cast members were soldiers helping you escape by sending your boat through the caves...only to drop into the battle minutes later! The only music loop you heard in the queue was at the entrance and it was called Pirates Arcade (Fortune Red). Well in the 2006, the Imagineers who I am assuming were from Glendale and didn't do their research on the Magic Kingdom version (or wanted to leave their mark) thinking that the time travel story was there too, made the weird decision to loudly blast the Pirates Overture from Disneyland's queue in Magic Kingdom's. The sound effects are still in the queue but now you can barely hear them. Magic Kingdom's version was, in some ways, a different attraction altogether with a story all taking place in the present instead of one about time travel. It also has a superior ending with a large treasure room that before Jack Sparrow came along, had eight animatronics.
Like I said, yes it gets a lot of flack, but the Imagineers in 1973 did put effort into Magic Kingdom's version to make up for it being a shorter ride with new details and characters absent from Disneyland's version. Here is a link to a ride through mix of the pre-2006 version of Magic Kingdom's Pirates, where you can hear what the original queue was like.