Disney provides free transportation to and from their hotels and the airport. If you want to use this free transportation, you need to call Disney's Fairytale Wedding Reservations team at:
407-827-6799
You cannot do this at the airport after you've arrived. You need to call Disney ahead of time to reserve your spot on the free Disney shuttle.
The wedding party would like to keep track of who will have their own transportation. Please send a quick notice to emilie.jack.love@gmail.com about whether you will be using the bus or have a car and approximately when that weekend you will be arriving.
Here's a link to Disney's bus service:
https://disneyworld.disney.go.com/guest-services/bus-transportation/