The Skywheel is certainly a must, providing they are operating. I'm not sure if they do shut down. We went in September one year and it was already offseason; only 6 other people there.
If you want a trip to a real quiet, beautiful beach, drive up to Sunset Beach in NC. It would be about a 30 minute drive. This is a much different beach than Myrtle. Very quiet at that time of year and great white soft sand. Just having moved down here, this is by far and away our favorite beach.
