There are two things I want to know about when I fly; 1) are the seats comfortable, and 2) is the food good. On long-haul flights the quality of either, but more likely the food, can vary significantly between legs. For example, the food served on the London-Beijing leg of my current flight was pretty good and even, in some respects, enjoyable. The food so far on the Beijing to Sydney leg is less good.
In what way? The Dauphinoise potatoes were spongy (which ought not to be physically possible), the bread rolls were inedible and the salad was frankly bizarre. Commendations for the cheese, though; who'd have thought there were two such different specimens that both had less flavour than the crackers?