Update:

Since this thread began, a few different Ford clubs as well as the RSOC Ireland have been verbally talking of a possible new all ireland Ford Fair at a massive location that would suit the north and the south....Fairyhouse Racecourse, Co. Meath has been mentioned. I worked at that place in 2008 at a Planet Love music festival and the tent set up alone for the concert, was enough to house 3,500 people, as well as all the different sound equipment companies and other companies that had their trucks/lorries etc for the behind the scenes stuff!!

So i would say it would easily hold 1000+ cars!!

Going by google maps, its 32mins - 34kms (21miles) from Dublin port!!