Restaurants who are heavily depending on customers from overseas should think about how to deal with the current issues to minimize effects of the virus.
For example, delivery service of foods served in restaurants would be the first idea to avoid plummeting sales output. The second one would be launching website to sell foods through the internet. But, when we consider that the online reservation consumes time from cooking to arriving at consumer's house, it won't be feasible to serve fresh foods on the internet.