malls have high vacancy rates due to retailers going out of business amid the retail apocalypse. Airline sector In March 2020, Air Canada cancelled all flights to Beijing, Shanghai, and Rome; and cut back on flights to Hong Kong, Tokyo, and Seoul. WestJet announced on 16 March 2020 that all international flights, including to the US, would be suspended by 22 March 2020. On 18 March 2020, Porter Airlines announced that it would suspend all flights until June 2020. Also on 18 March 2020, Air Canada announced that by 1 April 2020, all international flights will be suspended, with only six overseas airports and thirteen United States airports being served. The six connections at London, Paris, Frankfurt, Delhi, Tokyo and Hong Kong airports would allow Canadians to return home. These measures are expected to last until at least 30 April. In May 2020, Air Canada announced it would lay off 20,000 workers, even though they received the Canada Emergency Wage Subsidy. On 21 April 2020, Air Canada announced a suspension of all scheduled flights to the U.S. from 27 April 2020 to 22 May 2020, "subject to any further government restrictions beyond that date." On 14 May 2020, Lufthansa said it would resume flights between Toronto and Frankfurt as of 3 June 2020. The airline plans three weekly flights between the cities, and may add Vancouver and Montreal to its post-lockdown rota later in the summer of 2020. Flights are banned on all international non-essential travel between Canada and the European Union since 17 March 2020, but citizens are allowed to return to either location. Prior to the pandemic, Lufthansa operated 64 weekly flights between the two countries. The airline's recovery plans involve high-density cargo to replace paying customers. The Lufthansa Group airlines now require all passengers to wear a mask while aboard. Tourism and festivals Tourist sites such as the CN Tower were closed or limited in capacity due to the pandemic. Many summer festivals and events were cancelled including the Canadian National Exhibition and Canadian International Air Show in Toronto, Calgary Stampede, Celebration of Light fireworks festival, and Pacific National Exhibition. Pride events planned to take place across the country were changed to take place virtually. Casinos and gaming Alberta, British Columbia, Manitoba, Ontario, and Saskatchewan have ordered the closure of all casinos until further notice. Société des casinos du Québec also closed all four of its casinos.