if it is somewhere in italy i would put my money on Brindisi
Not so sure, but could be proven wrong. Is Brindisi not a bit way out for the conservative Belfast market? Not a well known tourist destination, not sure of business links or VFR traffic. What about Naples?? Thomson have pulled the Neapolitan Coast from Belfast for summer 2010, so maybe a gap there. Or the return of Venice??
If not in Italy, maybe Malta? Lets just hope its not yet another Spanish Costa or Island. Give the slightly more adventurous Northern Irish traveller a bit of variation. Wherever it turns out to be, book and travel in the near future before it gets pulled, once more (Gdansk and Venice!!).