While Halloween mayhem was relatively restrained in Dublin, with a "mere" 900 calls to fire and ambulance crews throughout Wednesday night, emergency services across the Republic and the North had to contend with serious incidents of arson, violence and intimidation.
Northern Ireland was the scene of the worst Halloween trouble, with 30 people arrested and 55 treated for injury on Wednesday night in the aftermath of Derry's Halloween festival.
Yesterday afternoon, a child from Warrenpoint was hospitalised with facial injuries after playing with a discarded firework.
In Cootehill, Co Cavan, an Orange lodge was destroyed by fire in what was described by gardaí as "suspicious circumstances".
Speaking at the scene yesterday, Drew Nelson, the Grand Master of the Orange Order in Ireland, said: "I am very sad about this. During the Troubles there were eight Orange halls in Cavan attacked, three of them burnt out, and it is sad to see the total devastation here today."
Limerick city was without a bus service all night, after rocks were thrown at four vehicles, smashing windows and causing other damage.
A spokeswoman for Bus Éireann said it regretted having to withdraw all services in the city after 7pm, following attacks on buses.
Youths threw eggs and rocks at the buses and smashed windows and windscreens.
In Newcastle West, also in Co Limerick, a number of cars were attacked by youths throwing rocks, and a car and a bus were destroyed by arsonists.
In Drogheda, gardaí are investigating threats made to an ambulance crew who were treating an injured man, who was an apparent victim of assault.
The Health Service Executive confirmed the emergency medical technicians (EMTs) were threatened by a balaclava-clad man who said he would burn out the ambulance and, as the crew left, threw an iron bar which struck the side of the vehicle.
A HSE spokeswoman said it was the "first time we have had such a serious threat made to personnel. You do not expect EMTs who are providing an emergency service to be abused like that."
The crew called for Garda back-up. The victim of the suspected assault, whom they were treating, has yet to make a complaint about how he received his injuries.
In the North, a local priest said Derry City Council had "lost control" of its annual Halloween festival. Thirty people were arrested for public order offences and 55 people were treated in Altnagelvin hospital's accident and emergency unit.
Among those treated following the fireworks display and fancy dress parade was a teenager who sustained a stab wound, a taxi driver who suffered a broken leg and other patients who were treated for fractured limbs, glass wounds, broken knuckles and broken cheek bones.
Fr Michael Canny, administrator of St Eugene's Cathedral, who has consistently questioned the benefits of the annual parade because of incidents associated with it, said the council had lost control of the event.
"It is time for a thorough re-think in terms of continuing with this annual event", he said.
The city's mayor, DUP alderman Drew Thompson, dismissed Fr Canny's criticisms.
"We have adjusted our programme over the years and we have reduced the problems associated with the over-consumption of alcohol which takes place on the streets after the festival", he said.