Be careful with those ferries. If they're doing it the same way it was done in September, you want the one that goes straight from the WL to the Contemporary. If you just miss that one it will go to Fort Wilderness after it stops at the Contemporary, so you have to wait until it goes there and then returns to WL. Once that ferry has left, the next one in will be going to Fort Wilderness first, then the Contemporary.
In other words, they had two ferryboats running the loop from WL this way:
Boat 1: WL-CR-FW
Boat 2: WL-FW-CR
It would be a lot easier if they had one boat that did nothing but run between CR and WL, but when I stayed there, there wasn't any such thing.
WL does have a direct bus to MK, so you could also ride that bus to MK (if it's running), walk across the plaza, and take a boat or monorail from there to the Polynesian. Unfortunately I am pretty sure there is no transportation between WL and TTC.