Certainly the following actions by an Orthodox Christian might be suberogatory: going to happy hour and then the meat section at the Golden Corral (an expensive American all-you-can-eat buffet) right before Maundy Thursday service.  And/or inviting or convincing one's fellow churchgoers to join one there.  (Never mind that Maundy Thursday commemorates history's most famous wine-consuming event!)

Some might question whether these are moral matters.  There's much one could say about that, but one relevant reason to say that these are at least indirectly moral matters is that combating greedy passions is a way to encourage civil, harmonious ways of life between people.