HH has a wide range of activities- both at the resort and on the island. All varieties of water activities are available - canoeing, kayaking, fishing, crabbing, parasailing, Dolphin watch cruises, shelling, crabbing, sunset cruises, swimming, etc.
The island has a number of great golf courses, clay and hard surface tennins courts are nearby, there are about 300 restaurants nearby, shopping- with both outlet malls and specialty boutiques, theater productions, museums and art galleries.
A short drive away is Savannah, GA and Charleston, SC with lots of historical sites. HH itself has some historical sites- a "tabby" plantation site (not restored, but foundations and some other information may be seen), Indian oyster shell mounds (in the Lawton area) and the Old Fort area.
The resort has a wonderful selection of activities for families, children and adults with "Kids Night Out", Magic shows, campfire activities, stories, "Behind the Ears" tours, wine tasting, cooking classes, biking (the island has miles of paved bike trails) and lots of age appropriate programs at the resort (crafts, hikes, horseback riding).
In addition, there is also plenty of opportunity for relaxation for those so inclined!
Enjoy!