As long as you're satisfied with a breakfast of stale, dried-out waffle stix, fruit, yogurt and/or cold cereal.
A cup of fresh made espresso never made it on a plane. Otherwise, when it comes to quality, not much to write home about, neither on the plane or in the FL. When you have the choice of two mediocre breakfasts, sleep over the first, grab something where you stay for showers etc.