Some bars' and restaurants' "happy hour" promotions will be outlawed under alcohol reforms which come into force next month.
Owners of bars, restaurants, supermarkets and bottle stores say they will have to take much more care about what they promote outside their premises, because discounts of 25 per cent or more on beer, wine and spirits will be banned from all advertising except inside licensed premises.
Under the wide-ranging changes - which were passed into law in December last year - clubs and pubs will also have to close at 4am.
This could change if local councils set their own policies, but in the meantime it was expected to affect up to 1000 venues nationwide during one of their busiest business periods.