This will impact the Alaska cruise itineraries and possibly early season New England/Canada cruises
From the article below
Transport Minister Marc Garneau said the government is also taking additional measures to ban cruise ships carrying more than 500 people from stopping in Canada until July 1, 2020. That comes on the heels of a warning from Tam not to travel on cruise ships.
“These decisions were not easy to make,” he said. “We are aware of the impacts they will have.”