International rugby chiefs are due to arrive in Dublin today to hear details of Ireland's pitch to host the 2023 World Cup.
Officials from World Rugby, the sport's governing body, will meet both Government and sporting bodies to discuss the bid.
Ireland is seen as the favourite to land the event - but is facing competition from both South Africa and France.
There is a deadline of June 1 for countries to submit their bids in writing.
The visit this week to Dublin by World Rugby officials is a key part of the bidding process.
It is understood a technical review group will meet members of Ireland's Bid Oversight Board, which includes former internationals Brian O'Driscoll and ex-Tánaiste Dick Spring.
The delegation will also visit Croke Park and the Aviva Stadium as part of their visit - two venues designated to host matches if Ireland's bid is successful.
Sports Minister Shane Ross is planning to bring a memo to Cabinet today to brief colleagues on the visit.