Only three pubs out of 43 surveyed at three major events this summer were found to have raised their prices for the occasions.
In a survey conducted by the Office of the Director of Consumer Affairs (ODCA) at the Galway races, the Rose of Tralee festival and a Leinster senior football semi-final, three pubs out of the 43 surveyed were found to have increased prices.
Eleven Dublin pubs in the Croke Park area were surveyed for the football semi-final at the end of June.
One pub, the Red Parrot on Dorset Street, raised the price of a pint of stout, ale and cider by 5c, according to the ODCA.
Larger was increased by 20c and a measure of whiskey was increased by 35c, it was also found. The proprietor has confirmed that he has not raised drink prices for subsequent matches, according to the ODCA.
A survey of 16 pubs in Galway during the Galway races at the end of July found that two pubs raised their prices during the seven-day festival, according to the ODCA.
The Skeff Bar, on Eyre Square, raised the price of a pint of stout, ale, larger, cider and a measure of whiskey by 10c.
O'Flaherty's Pub, on Eyre Square (Great Southern Hotel), raised the prices by 10c for a pint of stout and 20c for a pint of ale, lager and cider.
Mr Fintan Loftus, food and beverage manager at the hotel, said that the increase was as a result of price increases by Diageo the previous April.
A survey of 16 pubs at the Rose of Tralee festival at the end of August, however, found that no pubs had increased the price of alcohol.
"It is not illegal to increase prices, but it begs the question as to why prices were increased at these events," said an ODCA spokesman.
The survey also indicated that publicans were still not fully complying with the requirements of the Drinks Price Display Order. Seven pubs in the vicinity of Croke Park failed to display either the 16-item list or the comprehensive list in some part of their premises.
A similar picture emerged in respect of Galway and Tralee, where eight of the 16 premises in both locations failed to display either the 16-item or the comprehensive list.
The director of consumer affairs, Ms Carmel Foley, said she was "disappointed" that some publicans were still not fully complying with price display legislation. So far this year, six publicans have been successfully prosecuted and others were pending, she added.