Key Points Guinness World Records certified Copacabana as the world’s largest New Year’s Eve celebration on December 30, 2025, just ahead of the 2026 countdown. City planners are preparing for 2.5–3.0 million people on the Copacabana–Leme shoreline and about 5 million across Rio, with a scaled-up fireworks and stage plan. The bigger story is strategy: […]