Here’s what you need to know to plan a vacation on the Crystal Coast, a laid-back region with plenty of Southern charm.Aerial view of Cape Lookout.Credit: jared lloyd / Getty ImagesStay at the Atlantis, an updated 1960s lodge in Pine Knoll Shores with ocean-view rooms and dog-friendly accommodations.Take the ferry over to Cape Lookout National Seashore to enjoy the ocean vistas and look for wild horses.Rent a kayak or paddleboard and get out on …