First and hopefully last time I used this service with aircoach. I understand for some it's a nice and smooth experience, for us it was a nightmare. Before boarding in Belfast City centre asked if they have 4 seats available, after they checked and confirmed they have, boarded and payed for 4 adult seats, even though my youngest child should of been paid half price ticket, I realised there's no seats for 4 of us, only for 2. We had to stand or seat on the floor, no other choice, risking our safety all the way to Dublin. Customer service dismissive, trying to blame me, asking for picture with the bus full when they have cctv on the bus, customer service was called twice while still in the bus, they have a record of tickets sold, not my problem that some passengers had young children with them who travel for free. Humiliating experience, hopefully never ever again. The so called rich country has the poorest service in Europe. Do your jobs properly to avoid complaints!