There are things that Dermot Crowley can control, and there are things that he cannot. So, while Crowley can announce a €30 million share buyback and increase dividend payments for Dalata shareholders, the hotel group chief executive has no sway over Vat rates or the passenger cap at Dublin airport. Yet both issues are concerning him, particularly the vexed issue of airport restrictions. “Why would you cap the number of people visiting an island?” asks Crowley. “I don’t understand it.” Speaking to The Currency following the publication of the group’s financial results for the first half of the year, Crowley…