Thanks - but not sure if there would be immigration checks on the Scot-NI ferry route due to both ends being in the UK? Assuming we don't get checked on the ferry and obviously don't get checked when crossing the border, what happens if we get stopped by an official in ROI for whatever reason and it...

Hi, trying to find an exact answer to this, but haven't found this situation mentioned, although it must be fairly commonplace. My wife is a South African with UK ILR and we want to travel to Ireland later this year for tourism purposes. Our proposed method of entry to ROI is via ferry from Scotland...