Final preparations were being made in Dublin today for tomorrow's first Easter parade through the city for over 30 years.
Up to 100,000 spectators are expected to line the city centre streets as the military parade winds its way towards the GPO on O'Connell Street.
Around 2,500 members of the army, navy and air corps will take part in what the Taoiseach Bertie Ahern said should be an inclusive commemoration of all those who died in the 1916 Rising.
Hundreds of invited guests, including relatives of those who fought in the rising and British Ambassador Stewart Eldon, will review the ceremony from a stand at the front of the GPO.
But unionist politicians from the north have declined an invitation to attend, insisting the 90th anniversary parade will romanticise violent revolution.
The day's events will begin with a wreath laying ceremony in Kilmainham Gaol, lead by Mr Ahern, in memory of both civilian and military deaths during the rising.
The parade will begin at Dublin Castle before crossing the River Liffey on to O'Connell Street where it will pause. The tricolour on top of the GPO will be lowered to half-mast before a military officer will read the Proclamation in front of a 100-man guard of honour.
Mr Ahern will invite President Mary McAleese to lay a wreath, the last post will sound and a minute's silence will be held. The flag will be hoisted back to full mast before the national anthem is played.
A contingent of officers from An Garda Siochana will also march, representing the force's role in UN Peacekeeping missions.
Big screens have been erected along the route as viewing restrictions are in place along O'Connell Street.
Due to roadworks in the area, and in a bid to prevent a reoccurrence of the riots which erupted ahead of February's Love Ulster march, a large section of the street is not open to the public.
Gardai have carried out a detailed security operation, including inspecting drains along the route over the past two days, in bid to ensure tight security for the commemoration. All bins along the route have also been sealed.