We flew to Bangkok with Qatar about ten years ago. In Doha airport we heard a tannoy announcement of our names asking us to go to customer service. Cut a long story short, we were told the flight was full and that we would have to go on another flight via Paris instead. Nobody was there to meet us in Paris for our flight to Manchester. We never received an apology or any compensation and they also lost our luggage. I'm flying long haul again in December, but it's certainly not with Qatar.
I've travelled with this airline several times and they are excellent, first class. They serve alcohol, yes. They serve bacon, yes. The service is impeccable, the fleet is impeccable. They are actually one of my chosen airlines that I would pay extra to travel with. If you want a drink and there is no attendant walking around to babysit you at your seat, get off your ass and go and get one. They will serve you with a smile from their station. If you want a snack, they'll do the same. The last flight I took with them on an A380 was the best flying experience ever!
Maybe they don't have any alcohol because the pilot drank it all, which is also why they are off course...
They also now fly from Cardiff.
I have never had a problem they dont make a big deal about it and generally keep it hidden you have to ask for it.