When we did our 3land/4 sea it was my understanding that where you stayed on property was determined by which room you choose for the cruise portion. Since we had a Family suite Cat 4 they put us in the Poly but my inlaws went in a Cat 7 Navigator and they wanted to put them in Port Orleans French Quarter (I think that's the name of it) but we paid extra to upgrade them to a connecting room at the Poly.
According to
DCL website:
Cat's 12, 11,10,9,8 they say POR or POFQ
Cat's 7, 6, 5, and 4 they offer WDW Swan and Dolphin, Beach Club, Animal Kingdom or the Poly
If you book a Cat 1, 2 or 3 they give you Grand Floridian
They do give you unlimited park hopper passes and of course you can use the transportation in the park system, it doesnt include transfers to the hotel or to the cruiseship, air or insurance. All of your meals are taken care of on the ship but not in the parks.
HTH
Heidi