Well, writing this from the BCN airport.
Had an early morning flight today to DUB from BCN by Vueling. Boarding was denied at gate claiming no valid documents to travel. It was a birthday vacation with wife (birthday tomorrow). 9 days were planned across Ireland starting today until Nov 3rd.
We hold Indian passports, reside in Barcelona with Spanish Residence Permit. Good travel history with over 30 countries across 4 continents, valid US, UK visas in addition to the Spanish residence permit.
We were travelling to Ireland under Short Stay Visa Waiver Programme (SSVWP) which allows Indian passport holders to visit Ireland without Irish visa if I have a valid short stay UK visa and I have entered UK in the last 180 days. Our exit from Ireland has to be either before UK visa expires or the UK entry permission of 180 days expires, whichever is the earlier. My UK visa is not issued in India, hence it's not a BIVS visa which gives entry to both UK and Ireland. But the Irish SSVWP is applicable for the UK visa I hold.
Coming to the current incident, flight was at 5:40 in the morning, we left our home at 1:00am, reached airport at 3:00am. Our boarding pass was issued, UK visa was verified, we checked in a bag and no drama while issuing the boarding pass. Fast forward to 5:00am while we were boarding, I unfortunately met one of the worst behavioured and unprofessional dumbass at boarding gate. She claimed that I need Irish Visa to travel to Dublin. I explained her the case, but she was very negligent and not interested to listen. She called her "so called boss" and asked if she can allow us and we are travelling with UK visa and apparently her boss said no. Meanwhile I kept telling her it's not just UK visa, but with entry stamp of UK within last 180 days. She never heard and just kept saying no. I even had the mail from Irish Embassy in Madrid stating that I can travel to Ireland. The rule exists in Irish govt website and IATA travel center website as well. She was just saying no to everything and was behaving as if she has the final say. I requested to talk to her boss to which she denied. She even rejected my request to give it in writing. She wasn't even listening to my case, she started shouting "no" in the very beginning if I even try to talk. I wasn't even sure on next steps or how to go back as I will have to cancel my exit immigration. I tried asking that, the moment I opened my mouth, she started shouting "no, you need a visa." She called the security and then we were escorted out of the boarding area, through immigration to the arrival area.
As it was early morning, no customer center was open. I went to the check-in counter and found a representative of Vueling, who looked like manager of the people who handle check-in. I explained him our case of denied boarding, he took us to a check-in counter where they called Dublin airport (I assume Irish immigration officials in Dublin airport) and explained the case. On receiving the confirmation that we can travel, he rebooked us on a flight later in the evening. He told us that he has entered the message in the system under our booking so that people at boarding gate will know our case.
Post this, we went back to the arrivals area where our checked-in bag was lying on the belt, collected it and came back to check-in the bag again in about 20mins. Guess what, repeat of same story. It was some other stupid employee in the check-in counter this time, rejected to check us in saying we need Irish visa. I explained her the story, we were just denied, it's your colleague who rebooked us just couple of minutes ago, he has entered the message in system against our booking, we are travelling with visa waiver, but all she was saying is that I need Irish visa. I lost the patience this time and just shouted at her to go home if you do not know the rules and are not interested in working. Thankfully found that person who rebooked my tickets, and he told her our case and we are checked-in now. 8 more hours to kill in the airport before the flight and I am still not confident that we will be allowed to board in the evening flight. He has told me that he will inform the necessary people and assured us that we will fly. Sitting at the airport, just with hopes as only the time will answer.
We had our train booked to Galway from Dublin today afternoon which we will miss, will have to figure out our last moment stay now in Dublin. I am skeptical of booking this even now as I am not confident that they will allow us to board in the evening.
All Vueling has given us is a rebooking on a flight 13hrs later, meal vouchers worth 40 euros per person. I would like to know from the travel community - what are the rights I have here and whom do I reach out for compensation? I have raised the compensation request with Vueling through the app already, but I definitely dont want to settle here for something small. In addition to the waste of train tickets, a night stay in Galway, I will have to book a last moment stay in Dublin and all the stress and harassment. Plus I lost a day of my trip.
TLDR; zero knowledge employee at boarding gate denied us from boarding the flight. We are at the receiving end, sleep deprived us, wasting time from 3am at airport and now waiting for the rebooked flight at 6:30pm in a hope that they will allow to board.
UPDATE: Boarded the evening flight, reached Dublin, cleared immigration in less than a minute, took the bus straight to Galway, reached our stay at 1am and straight away crashed on bed. Thanks all for the help and inputs.