Norwegian Cruise Line has closed all public hot tubs and private balcony whirlpools aboard Norwegian Prima after three Legionnaires' disease diagnoses involving passengers on May and July 2026 sailings, with water testing underway across showers, faucets and hot tubs, all results negative so far, and the Centers for Disease Control and Prevention involved; NCL says it has not been confirmed whether the exposure occurred on the ship or elsewhere, and Caribbean itineraries from Port Canaveral continue unchanged. Carnival Cruise Line replaced self-muster with full in-person muster drills on Carnival Magic's September 13 departure from Miami and Carnival Paradise's September 14 departure from Tampa, sending guests to assigned muster stations for life-jacket demonstrations under SOLAS and coast guard rules that brand ambassador John Heald says every ship ...