FORT LAUDERDALE It was Diana Nyad’s day, her moment, her stage as a plaque was unveiled honoring her life achievements at the same Fort Lauderdale beach she played on a child. She pointed up East Las Olas Boulevard to a bridge she’d walk over each day from her home on Desota Drive. “This plaque is right where I’d come with my family from the time I was in second grade through high school,’’ Nyad, now 76, said Thursday morning. There was another girl she who grew up a few miles away that she met in that Fort Lauderdale of [.].