The only way to do that type of trip is to goto one of the parks or DD. After you get there you will need to transfer to the Boardwalk bus or boat if you do MGM. I would plan about an hour for all the transfers. The buses will run til about 2 am from Boardwalk to FW. At the closing of all the parks you will have to goto DD at that time as that will be the only place to catch a transfer.