The President of the European Parliament, Mr Pat Cox, and the chairman of Kerry Group, Mr Denis Brosnan, are among the guest speakers at a two-day seminar on the Nice Treaty which the Fianna Fáil parliamentary party is holding in Killarney next Tuesday and Wednesday.
The Taoiseach, Mr Ahern, the Minister for Finance, Mr McCreevy, and the Minister for Foreign Affairs, Mr Cowen, will also address the TDs and senators. Plenary sessions and workshops about Nice will concentrate on the theme: "Selling the Message".
Other speakers will include Prof Brigid Laffan, of the Irish Alliance for Europe, Mr Des Byrne, from the Dublin-based research company Behaviour & Attitudes, and the Fianna Fáil director of elections for the referendum, Mr PJ Mara.
Following a meeting with the Finnish Prime Minister, Mr Paavo Lipponen, this week, the Taoiseach reiterated that "securing a positive outcome in the forthcoming referendum is the highest priority currently facing the Government".
The Referendum Bill completed all stages of the Oireachtas when it was passed by the Seanad yesterday. The Minister for the Environment and Local Government, Mr Cullen, must sign an order before the referendum can be held and it takes place between 30 and 90 days after his signature.
The decision on the date is in reality a matter for the Taoiseach, who has given no indication so far as to his preference. There has been speculation about two possible dates: October 17th and November 7th. If the referendum succeeds, the Bill is signed by the President and the Constitution is amended accordingly.
Meanwhile, Green Party TD Mr Dan Boyle has accused the Government of using "smoke and mirrors" to obscure and distort the implications of the treaty for Irish neutrality.
He said the reality was that the Government's referendum proposals would not insert any reference to neutrality into the Constitution, and would not prevent Ireland joining NATO.
Mr Roger Cole, of the anti-Nice Peace And Neutrality Alliance (PANA), said the Seville Declarations had no meaning because Ireland "was allowing its airspace and landing facilities to be used by the military aircraft of a nuclear-armed state, namely the US".
The Irish Co-operative Organisation Society has called on its members to vote Yes in the referendum.
ICOS, which co-ordinates the activities of co-ops throughout Ireland, said a Yes vote was essential on economic grounds and to secure Ireland's future role in the European Union.
In a letter to member co-ops, the ICOS president, Mr Dessie Boylan, said the organisation's board "has considered the consequences of the treaty and has taken the unanimous decision to support a Yes vote".
"We believe that it is essential that all voters be informed on the facts of what is proposed and the consequences of their decisions. A Yes vote is essential for our agri-food sector and the wider economy, and the outcome of the referendum will have major consequences for Ireland's influence and role in the future of the EU," Mr Boylan said.
The Fine Gael MEP for Connacht-Ulster, Mr Joe McCartin, accused the No campaign of dishing out "the same scares and deception with which they have been confusing Irish voters for 30 years".
He told a party meeting in Castlebar, Co Mayo, that warnings about loss of neutrality and economic disaster had proven unfounded.
"Within a democratic union we have become the second-richest member-state. Far from losing investment and people, our population is growing and becoming richer every day."