no there is no shuttle. You may want to consider a car one way where you drop off at WDW car center and they will take you to a park. You should be able to get a bus from the park back to bonnet creek. There is also limos and Mead transportation. We are staying there in about 4 weeks but we always rent a car.
I would really consider renting a car. You could schedule Mears from the airport to the resort or a towncar (like Tiffany towncar - which does a grocery stop).
Here's a thread where someone posted the shuttles to the parks for Bonnet Creek. You might want to contact the resort to find out the shuttle hours for when you're planning to visit:
Our Authorized Disney Vacation Planners are here to provide personalized, expert advice, answer every question, and uncover the best discounts.
Let Dreams Unlimited Travel take care of all the details, so you can sit back, relax, and enjoy a stress-free vacation.