Daniel B.
Yelp
The Sea Pines Resort is located on the southern tip of Hilton Head Island, South Carolina. It's a quiet, luxury community/resort composed of homes, condos, and villas that blend in with the lush nature of the island. The resort is rather large at well over 5,000 acres. It's considered the most exclusive development on the island with plenty of things to see and do including biking, horseback riding, golf, tennis, water and beach activities, a forest preserve, and shopping and dining. The resort is perfect for low-key, family-friendly vacations.
I grew up vacationing at Sea Pines with my family. For the longest time, it was known as Sea Pines Plantation. It wasn't until 2005 that "Plantation" was replaced with "Resort." We'd come here at least once a year. I still visit Sea Pines to this day, but due to work and other commitments, I don't get to visit as often as I used to or would like.
If you decide to vacation at Sea Pines, you can either stay at one of the official resort properties (e.g. The Inn at Harbour Town) or choose to rent one of the many vacation rentals by owner. I recommend booking through Destination Vacation: http://www.destinationvacationhhi.com/. As a property owner or official guest of the resort, you get discounts on just about everything it has to offer from retail to food to tee times. If you decide not to stay at the resort, but would still like to visit, you just have to pay a $6 entry fee at the gate.
Sea Pines is home to Harbour Town (http://www.yelp.com/biz/harbour-town-hilton-head-island) where the iconic red-and-white-striped lighthouse (http://www.yelp.com/biz/harbour-town-lighthouse-hilton-head-island) is located. There's a yacht basin (marina), boutique shops, restaurants, a playground for kids (http://www.yelp.com/biz/harbour-town-playground-hilton-head-island), and a world-famous golf course and tennis facility. The golf course, Harbour Town Golf Links, was designed by Pete Dye. Each spring, it hosts the PGA Tour's Heritage golf tournament.
In addition to the golf course at Harbour Town, Sea Pines has two additional courses: Ocean Course and Heron Point. Ocean Course, as its name implies, borders the ocean (specifically, hole no. 15). Heron Point used to be known as the Sea Marsh course until 2007 when it was renovated and renamed. Also designed by Pete Dye, it underwent more design changes in 2014. I've played Harbour Town, Ocean Course, and the old Sea Marsh course and all three were outstanding. I highly recommend them to golfers of any skill level. I think Ocean Course is considered the "easiest" of the three. Expectedly, Harbour Town is by far the most challenging track with narrow fairways, low hanging trees, and tiny greens. I've yet to play Heron Point, but look forward to in the future.
Heron Point's 2014 re-opening coincided with the opening of the new and absolutely beautiful Plantation Golf Club. The clubhouse is home to Live Oak, a contemporary, farm-to-table, "Lowcountry-inspired" restaurant, which I think is one of the best restaurants on the entire island (http://www.yelp.com/biz/live-oak-hilton-head-island).
Going back to when I was a kid and even up until today, one of my favorite activities to do in Sea Pines is bicycling. Sea Pines has a bike shop (http://www.yelp.com/biz/sea-pines-bicycle-rentals-hilton-head-island) where you can rent bikes for hours or days at a time. There are other bike shops too (e.g. The Peddling Pelican: http://www.yelp.com/biz/peddling-pelican-bike-rentals-hilton-head-island). The resort is covered in safe and fun-to-ride trails. These "leisure trails" exist in pretty much every neighborhood of the resort so it's easy to get everywhere on your bike. I like to bike to Harbour Town as well as bike on the beach. The hard-packed sands of Hilton Head are ideal for bikes.
The northwest side of Sea Pines, the same side where Harbour Town is located, faces the Calibogue Sound. The south/southeast side of Sea Pines is where the beach is located. Sunrise and sunset are always great times to be out on the beach as the views are picturesque and breathtaking. I think the best thing about the long beach at Sea Pines is it's not overcrowded. Like the rest of the island, Sea Pines has done a good job overseeing/controlling development in the interest of the environment. Many stretches of the beach are calm, quiet, and essentially private. It's nice.
If you've ever been to the islands and beaches of North Carolina, South Carolina, and Georgia, then you'll know what to expect out of the beaches of Sea Pines. There aren't soft white sands and blue oceans like Florida, the Caribbean, or Hawaii. Instead, the sand is various hues of grey and the ocean appears darker as a result. The beaches of the Carolinas and Georgia are different, yet still exquisite in their own right.