More than 2,500 gardaí will be on duty across the country for St Patrick's Day tomorrow.
A policing plan is in place to combat multiple protests.
People are being urged to follow public health guidelines tomorrow and to avoid large gatherings and house parties.
to date, gardaí have issued more than 2,100 fines to people for organising or attending a house party.
Officers are appealing to the public to stay at home and will be increasing their patrols at public spaces and checkpoints.
A policing plan is also being rolled out to manage anti-lockdown protests in Dublin which will be supported by air and dog units.
NPHET's urging people not to have takeaway pints or buy 'cans' on St Patrick's Day tomorrow.
It has also raised concerns about Covid-19 hospital admissions.
There were 360 people with the virus in hospital yesterday, after the number rose for two days in a row.
NPHET says Ireland’s 'plateau' in fighting Covid is similar to the one witnessed around Halloween.
The number of new cases dropped by just 3 percent over the last week.
The week previous, there was a fall of around 20 percent.