We booked the 3.30am coach to get to Dublin Airport yet the bus came 20 minutes late! No explanation off the driver. All he said to the large crowd of people waiting was "i only have 5 seats left on this coach therefore i can only take those with pre booked 3.30am tickets" .. some were horrified, as like I would have been as we had to be at the airport by 4.15am. We noted there were at least 8 people waiting for the bus who had not pre booked tickets.. they had to hope there was space on the next bus. The fact the bus was 20 mins late made us think that we would also be late arriving at the airport. We had no idea how long the journey really would take and had no idea on how to contact you so early in the morning. We were really panicking!. Maybe you should just have pre bookable buses so as not to cause any upset. If we ever need to get to the airport again, we will definately get a taxi next time.