(December 22, 2015, 10:23 AM EST) -- MIAMI — A Florida federal judge on Dec. 7 dismissed a passenger’s negligence lawsuit against Royal Caribbean Cruises Ltd. for a broken leg he sustained during a port-of-call excursion, finding that the plaintiff did not establish the necessary proximate cause to support his claims against Royal (Kevin Flaherty v. Royal Caribbean Cruises Ltd., No. 1:15-cv-22295, S.D. Fla.; 2015 U.S. Dist. LEXIS 165485)....