Having an Andy Rooney moment here. Have you ever had someone (usually a stranger, maybe a restaurant hostess) request something of you, and end the request with: "Will that be fine?"
I'm not sure when this started, but it always rubs me very much the wrong way, and I have to fight the desire to give them a sharp retort. It just seems so presumptuous.
"I know you've purchased a seat in the extended legroom section of this flight, but I'd like to switch places with you so I could sit near my fiancé. My seat is back by the toilets in between two parents who'll be holding their infant twins on their laps during this flight. Will that be fine?"
"Would you mind?" is surely a better way to phrase this. Even "would it be okay" or "would it be all right".
It will definitely not be fine.