Bars
The legal drinking age in Northern Ireland is 18. People at and above the age of 16 will be served beer and wine with meals as long as there is a consenting adult present. In general, restaurateurs are generally strict about this rule, while the operators of small local pubs and bars tend to be more relaxed.
Depending on their license, most bars stop serving alcohol at either 11PM or 1AM. Some clubs serve until later, and some bars have (illegal, but widely overlooked) "lock-ins" where the doors are locked at closing time, but people can stay and drink for longer. This only takes place at the discretion of the bar owner, and such events operate on an invitation-only basis.
Bushmills whiskey is made in the town of the same name on the north coast, and distillery tours are interesting and enjoyable. Belfast produces its own range of ales.