Ryanair are trying to say that they haven't been able to deliver on the agreed numbers of passengers at Shannon due to a
force majeur; namely the €10 tourist tax
Ryanair in airport fee delay row - National News, Frontpage - Herald.ie
Meanwhile Fine Gael pledge to abolish the tourist tax, but then promising is one thing, getting into power and actually doing it is another:
Kenny pledges to abolish travel tax | Latest News