I know the answer is because they’re cheap and they probably recoup a significant amount back, from clauses in their contract, but I have no idea why TUI and Jet2 continue to use them. Even when you went back to the TCX days, they were dire then. There was an aircraft one year based up at NCL and it was literally tech every other week.
Has anybody seen any details to back up this common assertion, or is it an urban myth? Given their small numbers any delays are more noticeable, but how does their serviceability stack up with mainline fleets?