The Sandbox Children’s Museum, We are open daily! Monday – Saturday we have 3 play sessions available daily 10 a.m., 12:30 p.m., and 3 p.m. Sunday’s 12:30 & 3 p.m. We will close for birthday parties and if no one has booked for a session. Our Hilton Head location will remain in its current location through April 18th. Our projected opening at Lowcountry Celebration Park, 94 Pope Ave., is May 1. 18A Pope Ave. Hilton Head Island, (843) 842-7645 | 1414 Fording Island Rd. Tanger 2 Outlets Bluffton, (843) 705-6235 or thesandbox.org.