Yes, there is no telling where the areas are going to hit the hardest, but unless Dorian magically decides to barely brush Miami and suddenly it's tracked to keep going all the way left on the map, or suddenly go upwards into the Atlantic, the parks are definitely going to close at some point, especially if it's on track to going through the state and on track to being a potential cat 4 as predicted. No matter where it lands, if that is the scenerio, it's more than likely going to close, it's just unknown for how long, or when. For examples of hurricanes closed due to Disney and their tracks reference Floyd, Frances, Jeanne, and Matthew.
I do not mean to burst all your bubbles, but just saying, as I may have not been tracking this post on the forum, but this page alone looks to be a lot of non-Floridian's, maybe a couple of Floridians, and just giving a reality check.
To me, Disney seems the perfect place to be. Last time it closed, it seemed they did a lot of activities for children in order to make up for not being in the parks and more than likely they were able to well maintain their power compared to other areas. However, while it's nice for someone like me, it might be different for those who stay at value resorts, or paid hundreds to thousands of dollars for a vacation where they're not going to get the bang for their buck if the parks close.