Since the issue and holdup is the bridge I think Plan B is simple. Plan B should be just build the parking garage without the bridge with a path to the street. Then let the onslaught of guests try crossing that intersection and see the mess it'll make. And see how much those Harbor St business will NOT actually get much uptick in business they claim is being affected by the bridge. The city will be begging Disney to build the bridge and even offer to help pay for it.