of 6, voluntary workers, residents of the Veneto region, and participants in sporting events. Overnight visitors, who already pay a "stay" tax and account for around 40% of Venice's yearly total of 28 million visitors, would also be exempted. The access fee was expected to come into effect in September 2019; but it was postponed, firstly, until 1 January 2020, and then, again, due to the coronavirus pandemic. The new charges would be imposed on those tourists who were not staying overnight and is expected to come into force on 1 January 2022. Diverting cruise ships Having failed in its 2013 bid to ban oversized cruise ships from the Giudecca Canal, the Italian inter-ministerial Comitatone overseeing Venice's lagoon released an official directive in November 2017 to keep the largest cruise ships away from the Piazza San Marco and the entrance to the Grand Canal. Ships over 55,000 tons will be required to follow a specific route through the Vittorio Emmanuele III Canal to reach Marghera, an industrial area of the mainland, where a passenger terminal would be built. In 2014, the United Nations warned the city that it may be placed on UNESCO's List of World Heritage in Danger sites unless cruise ships are banned from the canals near the historic centre. According to the officials, the plan to create an alternative route for ships would require extensive dredging of the canal and the building of a new port, which would take four years, in total, to complete. However, the activist group No Grandi Navi (No big Ships), argued that the effects of pollution caused by the ships would not be diminished by the re-routing plan. On 2 June 2019, the cruise ship MSC Opera rammed a tourist riverboat, the River Countess, which was docked on the Giudecca Canal, injuring five people, in addition to causing property damage. The incident immediately led to renewed demands to ban large cruise ships from the Giudecca Canal, including a Twitter message to that effect posted by the environment minister. The city's mayor urged authorities to accelerate the steps required for cruise ships to begin using the alternate Vittorio Emanuele canal. Italy's transport minister spoke of a "solution to protect both the lagoon and tourism ... after many years of inertia" but specifics were not reported. , the 2017 plan to establish an alternative route for large ships, preventing them from coming near the