Grab a pirate hat or channel your inner mermaid for a weekend of family-friendly maritime fun on Folly Beach. Boogie down during Friday’s “Under the Sea” dance or enjoy “Breakfast with Mermaids” on Saturday morning. Then, visit Center Street for an all-day affair with local vendors, beer gardens, and food trucks. Locations & times vary. Friday & Saturday. Free. (843)588-2447, www.visitfolly.com