I saw them in Dublin Airport a few years back. I came in off a flight some summer evening around 8pm and went from arrivals to departures for (illegal?) collection at designated spot.
Presumably most departures are done for the day by that time (cc @Batigol) so it was quiet in terms of other passengers, but Jedward were outside too with all their bags waiting on collection and they were swarmed by around 30/40 teenage girls who must have been expecting them.
Like @Big_Dan_Campbell, I thought they were sound chaps. They were very good to all the childer looking for pictures and autographs and spent ages chatting to them. I know this because my taxi man was very, very late. 
