The first cruise ship leaving Venice since the pandemic is set to depart Saturday amid protests by activists demanding that the ship be rerouted out the fragile lagoon, especially Giudecca Canal through the city’s historic center.

They say the enormous vessels — weighing over 90,000 tons and carrying thousands of passengers at a time — pose environmental and safety risks to the canal and the city. Another protest is also planned Saturday by pro-cruise activists whose jobs depend on having thousands of visitors flowing through one of Italy’s top tourist destinations.

Italian Premier Mario Draghi’s government pledged this winter to get cruise ships out of the Venice lagoon, but it will likely take years to reach that goal. The government says it is organizing bids for a viable alternative outside the lagoon, which should be posted any day now.

Still, even an interim alternative route to the Giudecca Canal won’t be ready until next year, Italy’s Ministry for Infrastructure and Sustainable Mobility told The Associated Press in an email.