I'm sure this would be a formality. There is a better then even chance that the South Florida Water Management District is just another arm of Disney anyway. But, if it isn't Disney has the ability and the resources to just move a wet land over. They have shown over the years that they are ahead of most places in water management and I'm sure that with the proper plans in hand it would be rubber stamped.
I remember when I was working for an earth moving company building a shopping center that had a wetland right in the middle of what was going to be a parking lot. We just redug the pond, transferred the plants to the new location and, just like that, there was a parking lot and a wetland. Nature is a strong force but so are bulldozers. The wildlife stayed on and all was well with the world.