If you use commanders discretion on a ULR, you better have a very clear understanding of what an exceptional circumstance is. If you feel that it is safe to continue with such understanding, having taken into condsideration of ALL your crew, you can exercise discretion.
Get it through your head, you will be SOLELY responsible for any liability. You are responsible for every crew member. You are responsible for every crew members actions. Use the OM-A for your protection or Emirates will hang you with it if something happens. Understand the wording and your responsiblity because any proficient aviation lawyer that EK has the deepest pockets for will shred you, your family and your life.
If you continue, the crew does basic minimum service and spends as much time resting as possible.
EK gets a free walk on your licence and reaps the rewards as we hope for some crumbs, STAY SAFE! The only reason some are bullied is because we havent had an incident or accident YET that would set a precedent.