St. Simons is the largest of Georgia’s four idyllic Golden Isles, and also typically the most touristy. But in the fall, when the taffy eaters have largely vanished and the air temperature still lingers in the 70s, you'll barely have to share the soft, grass-crowned sand with anyone. The prime adventure activities are fishing from the shore or St. Simons Island Pier, surfing (you’ll need a wetsuit), and road biking through St. Simons and other barrier islands. If you’re looking for a place to stay outside of the five-star resorts, head for the quiet Island Inn. Fall rates start at $99 per night.