Santa and Mrs. Claus will arrive via ferryboat at 1 p.m. Dec. 3 at TPG Conanicut Marina, 1 East Ferry Wharf. The Clauses will then take a wagon ride to the Conanicut Gift Shop, 20 Narragansett Ave., to take photographs with children until 3 p.m. The day’s activities will culminate at 6:30 p.m. with the