Hello Celeste!
Thanks for stopping by the Disney Parks Moms Panel! Wyndham Bonnet Creek is in the same general location as Disney's Caribbean Beach Resort. If you have a car, I suggest parking at
Disney's Wilderness Lodge Resort as long as you have a breakfast reservation. Sometimes the parking lots get full, and I have been turned away before without a reservation.
Parking is valid for 3 hours for a dining reservation at a Walt Disney World Resort hotel. You can risk it if you want, and leave your car there while using Disney transportation to go to
Magic Kingdom Park. Another option is parking at the Transportation and Ticket Center after your breakfast and going to Magic Kingdom Park.
I often use Uber or Lyft to get around Walt Disney World Resort, too. If the distance isn't too far, then it's not too expensive, and it's often quicker. On Uber you can check how much a ride would be before you use it. If it's worth it to you, I would Uber to Disney's Wilderness Lodge, take a boat to Magic Kingdom Park after breakfast, and then if you were going back to your hotel, I would walk or monorail to Disney's Contemporary Resort and call an Uber from there. Also, I believe Wyndham Bonnet Creek offers a shuttle to and from the parks depending on your schedule.
I hope this helps, Celeste. If you have any other questions, please don't hesitate to ask. Have a magical vacation!
Tania