first I would check with either the passport office in Dublin or at the post office if there are any current delays in processing given that it is a quieter time of year, secondly is there a fast track system? I know that in the North you could 'walk' your application round the passport office in one day (was quite pricey tho') , also you could pay extra at the PO for them to check it and this also speeds up the process. Good luck but I think you will probably have plenty of time, just check to make sure.