EVEN THOUGH WE HAD RESERVED, BOOKED,AND PAID FOR TWO SEATS ON AN AIRCOACH FROM BELFAST TO DUBLIN, WE WERE TOLD AT THE GLENGALL STATION THAT THERE WERE ONLY 11 SEATS AVAILABLE. THAT SCARED US AS WE HAD AN AIR LINGUS FLIGHT'S REQUIRED COVID TEST WE NEEDED TO BE AT THAT AFTERNOON IN DUBLIN BEFORE A FLIGHT THE NEXT DAY BACK TO THE US. FORTUNATELY, WE CONVINCED THE DRIVER WE WERE WORTHY OF BEING TWO OF THE 11. THIS MAKES US DOUBT THE LEGITIMACY OF AIRCOACH'S BOOKING PROCESS. Also, booking only on-line is terrible for those who are not computer literate. Also, I had to call your booking office because you wouldn't accept my credit card.... although every restaurant and hotel had during our visit in both N.I. and the Republic. Only because your agent was an understanding person, did we get to book the tickets and seats.