About Portside at Grande Dunes At Portside, residents enjoy an active, engaging lifestyle that promotes wellness and independence. It is our goal to keep our residents linked to resources and opportunities that will fulfill their needs and interests in the Myrtle Beach area. Residents have many opportunities to participate in a variety of life enriching activities and events designed to stimulate the mind, body and soul. From cocktail-hour gatherings where you can learn about the nuances of a good Pinot Noir, to a discussion of the latest best seller in our Life-Long Learning series, to exploring new ways to stay healthy in a fitness class...expect the unexpected.