So you think everyone entering the country must be quarantined for 2 weeks? Why would anyone want to pay for a vacation when they can just get on a plane; land...and stay for 2 weeks at government expense?
How long do you think they would have the funds to pay for that? Wouln't it be cheaper and more effective to close all ports and airports to all tourism?
No need to light your hair on fire yet.
Just my opinion