I was on the Manchester flight that left before you on the same day and agree that the organisation at Antigua was appalling and the delays boarding (and with luggage that we experienced to a lesser extent than you) were totally unacceptable, but entirely not Maleth's fault.
I'll be honest I was dreading the flights, but both ways the service was friendly, food was good and we landed on time on the way in and 45 minutes late on the way back.
I had a lovely conversation with one of the crew mid flight and it's clear that they love what they do, they care very much about both the service they give and the criticism they receive (and see) online. I've had much worse scheduled airline experiences.