We flew from Newcastle airport to Mykonos via Heathrow airport. We arrived super early thinking the security would be crowded. We were waiting 50 minutes in the British Airways queue to just drop our bags and to get our boarding passes. There was only one employee checking bags and she didn't seem very experienced since she kept asking questions to her colleague who was checking the priority costumers. On boarding there was a delay in getting us on board. We arrived in Heathrow and after we got on board we advised that we're going to have to delay for about 70 minutes. When we finally reached Mykonos we realised that our suitcases, all 3 of them, hadn't arrived with us but instead they were in Athens. We reached the help desk and the employee told us they will arrive later this evening with another airline. We couldn't possibly wait for them as Mykonos wasn't our final destination and we had tickets for the ferry that would be leaving shortly (wisely I booked the ferry with a 3 hour's gap cause, well, I don't trust airlines anymore.) Even with the big difference of 3 hours we caught our ferry just in time. We arrived at our final destination tired and with nothing at all on us so we had to go and get some toiletries. Last thing I wanted was to do shopping. Our suitcases arrived on the ferry the next day in the afternoon and we had to travel to the port to get them. Another waste of our holiday time. Me and my family was looking forward to this holiday for months and British airways didn't give us the carefree we deserved. I tried to put a complaint in the airline web page but there's no means of communication such as an official email address or even a platform to their web site. Too many complaints to handle perhaps? P.s. Seats to narrow too.