UK, Irish on Thursday was easy enough..they only ask to SHOW the ID, they even ddn't register them..
..Brother of my hub was admitted to Admirals without any ID. I just confirmed that he does have a passport (forgotten in the hotel) and that he is over 21, and my hub remembered his passport No. by the chance. It was enough..

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"What lies behind us and what lies before us are small compared to what lies within us."
Oliver Wendell Holmes