Passengers arriving in Ireland have been expressing their frustration after paying for COVID-19 tests unnecessarily.
They were supposed to have proof of a negative COVID-19 test from today.
However, that measure has now been delayed until Sunday or possibly Monday.
The Justice Minister says the delay was a result of regulations not being signed soon enough and that it wasn't intentional.
Colin Murphy and his girlfriend live in Liverpool and arrived in Dublin this morning.
He said: "Yesterday, both of us had to take an extra day's annual leave and we had to pay £30 each [for a test].
"This morning, we arrived at our gate in Liverpool and were told they've scrapped it until Sunday now.
"I don't understand why, when you're releasing these rules, nobody sits down and puts a timescale on when it's going to be needed for."
Nightclub owner Ian Redmond, meanwhile, arrived back in Dublin this morning after spending over $200 on testing in the US.
Just landed home from US to @DublinAirport Two full flights ahead of me and not one PCR or antigen certified test being requested. What an utter waste of money and time! @HSELive @DonnellyStephen #COVID19
— Ian Redmond (@ianredmond) December 3, 2021
He said: "To arrive back in Dublin Airport this morning with nobody asking for anything other than a passenger locator form is a bit disheartening after spending all that money.
"It's not just me - all the passengers at the baggage carousel were giving out about it."
Government sources say the regulations will come into effect on Sunday or possibly Monday.
The Department of Health is encouraging people flying here over the next 48 hours to get tested regardless, in the spirit of the regulations.
