Right now it is self-regulation - requesting them to close / minimize hours / reduce alcohol etc.
From the SCMP
Lam said the government would amend the law to forbid 8,600 restaurants, bars and clubs that hold a liquor licence to sell alcohol. But she did not give a targeted effective date.
https://www.info.gov.hk/gia/general/...0032400050.htm(4) Reducing social contacts and gatherings further
To further reduce social contacts and gatherings, the Government will invoke the Prevention and Control of Disease Ordinance (Cap. 599) to introduce legislation to temporarily prohibit the sale and supply of alcoholic drinks by about 8 600 restaurants, bars and clubs with liquor licences in Hong Kong. Details of the relevant legislation will be announced later.
The Government will also discuss with members of the restaurant industry on ways to further reduce gatherings (such as wedding banquets and other celebration activities) and how restaurants can reduce customers' risk of infection during meals. If the effect of voluntary actions taken by the industry is not good, the Government will consider introducing regulations through the above-mentioned legislation.
In addition, the Government will request the clubs on private recreational leases to immediately close all of their recreational and sports facilities, changing rooms and play rooms for young children in the clubs. The Government also appeals to other private clubs and gymnasia to adopt the same measure to reduce the risk of the spread of the virus.