Pros:Satisfied all round. The staff even assisted me when it appeared my hand luggage was not found at the end of the trip. Apparently someone had shifted its position and the telltale sign turned inside. Gratitude to the staff for the quick discovery.
Cons:I felt rather embarrassed that I was expected to present a transit visa before I COULD join another Aer Lingus plane on what I expected to be a straight flight from London to Washington. (I had the same problem on my flight to UK through Dublin when for some twenty minutes I was waiting the pleasure of the officer before he would sign my passport.) I travelled from Nigeria (but on Ethiopian Airlines), on my way to Washington with a stop at Dublin without any embarrassment or query to present a transit visa. I never expected the embarrassment since Aer Lingus originates from Ireland and anything to boost the use of the airline I expected would be put in place, not the reverse.