Industry sources say they believe it will be difficult to implement but are resigned to making the changes.
A two-week pause in the introduction of ticketing for nightclubs has been shot down by the Government.
Industry reps had sought the delay to allow them to put the infrastructure in place to take online bookings for access to nightclubs.
At a meeting this afternoon they were told by Department officials the new regulations will be published tonight, and signed tomorrow.
They will require ticketing for entry, booking at least an hour before arrival and no congregation outside venues.
Industry sources say they believe it will be difficult to implement but are resigned to making the changes.

Man Who Allegedly Led "14 Man Pack" That Chased Qayyum Balogun, Appears In Court
Eight More Infants Recovered From Tuam Mother And Baby Site
Israeli Ministers Ben-Gvir And Smotrich Barred From Travel To Ireland
SIPTU Recommends Ambulance Members To Accept Labour Court Proposals Aimed At Resolving Pay Dispute
Wicklow TD Steps Down From Committee Chair Role Following Drink Driving Arrest
Man Charged In Connection With Fatal Stabbing In Dublin
Fine Gael Faces Criticism Following Recent EU Migration Decisions
EU Taking Ireland To Court Over 'Significant' Unauthorised Peat Cutting