Pubs around the country have been opening for the first time on a Good Friday since 1927.
The Vintners' Federation said the vast majority of its members are open.
But some pubs are sticking with tradition and keeping their doors closed for the holy day.
Gardaí and the Road Safety Authority have appealed to motorists to drive carefully this weekend.
They say that 59 people have been killed or seriously injured in Easter Bank Holiday crashes since 2012.
Garda checkpoints have been mounted around the country.
Minister for Transport Shane Ross is urging people who do have a drink in the pub to leave their car at home, organise alternative transport or select a designated driver.