I don't think anyone has to worry about actually swimming 'with' the ducks. They always hopped out when the humans hit the pools!!! I can't remember one time when I was in the water with the ducks...even the early morning swims.
I have to ask a question for those of you in the know though...my dd had a severe reaction to the water at Ole Man Isle back in '99. Her doctor told us, as did her swim instructor, that she can't swim in overheated chlorinated water..her eyes feel like there are shards of glass in them. So, she always wears goggles now. You have to admit, WDW does heat their pools. But if they aren't using chlorine anymore, why do her eyes still hurt without the goggles?? Just curious. Not to mention the fact that it smells like a Chinese laundry when you walk past the pools the first thing in the morning!!