HH is about a 5 hour drive from WDW- all interstate.
The resort itself has a great recreational staff with varied programming for kids of ages (including adult kids). There are lots of nature programs, shelling, trips to nearby Pinckney Wildlife Reuge, crabbing, mystery programs, fish painting (Gyotaku), canoeing, kayaking, biking, Dolphin Cruises, cooking with Matilda, wine tasting and more- all scheduled right at the resort itself.
HH also has a wide variety of other recreational services available (the resort can help assist with these also). Dining (over 300 restaurants to choose from), shopping (lots of boutiques and outlets), sailing, fishing, parasailing, tennis, golf, historical tours, nearby Savannah and lots more.
Thanks for getting me thinking about the great activities, I need to call MS again!
Enjoy!