Some of the biggest names in sport and showbiz will tee-off at the JP McManus Pro-Am golf classic on Monday and Tuesday helping to raise more than €30 million for local charities.
Joining the star names such as Tiger Woods, Ernie Els, Darren Clarke and Padraig Harrington will be a battalion of celebs including Real Madrid and England star Michael Owen, former Celtic manager Martin O'Neill, horse racing supremo Tony McCoy and grand prix boss Eddie Jordan.
But while the 40,000 golf fans will be keeping an eye on the action on the course, it will be the "off-course" event which is likely to unleash a multi-million euro deluge into the event coffers.
The gala dinner on Tuesday night in a marquee in the Manor grounds will feature a celebrity auction.
Up for grabs at the auction will be a game of golf with super model, Jodi Kidd, an Astin Martin DB9, a signed and framed Grammy Award won by U2 and the jacket worn by Bono at the Grammy Awards night.
At the last JP McManus classic five years ago, one golf enthusiast forked out €1.7 million to play a round of golf with Tiger Woods; a painting of the late Payne Stewart sold for €1.7 million and a signed soccer ball went for €31,000.
A spokesperson said: "It's going to be mega as there are some really magnificent and novel lots awaiting bids."
On the golf course a total of 56 teams will tee off on Monday and Tuesday. Entry team paid an entry fee of €100,000 for the charity fund.
An army of volunteers have been working flat out to finalise every organisational detail.
There will be major traffic diversions on the N69, N20/21 in and around Adare and Croom and these will be well sign posted.