Once again, my comments were about the permit drawing itself, not about what does or does not seem to make sense.
That being said, your comments got me thinking....
The Poly2 addition will be adding 1000+ guests needing transportation in that area every single day.
The monorail is not able to increase capacity easily or economically.
Buses are not the normal mode of transportation to MK from Poly.
The easiest, and cheapest, way to increase daily transportation capacity to MK will be by water.
Also, it would not be unlike Disney to just move the current dock location during the construction.
Again, it does not have to make sense, this is Disney!
(and they will change their plans dozens of times before it is done, lol)