The busses loop throughout the campground all day. But also, if you want to drive to the parks your parking pass let’s you park for free at the parks.

There are buses that run around the campground, you can use them to get to either the marina or the entrance, where the buses to the parks are. From the marina you can go to the contemporary (and the Wilderness Lodge, I think) or magic kingdom.

There are. boats to the Magic Kingdom that leave from the lake dock area. Buses to the other parks and Disney Springs leave from the bus stop near the Outpost (where you checked in). There are also buses that are internal to FW that get you to the boats or buses.

Yes, buses to every park and a boat to magic kingdom.