The safety demo says it's a requirement to keep it fastened. The CSM normally makes a PA just after the seat belt sign is switched off stating that it's a requirement to keep if fastened when not moving around the cabin. Most Captains mention that it's a requirement. I'm starting to think that we need to use the line in those drink driving ads. Something like 'if you're sitting and not wearing your seatbelt you're a bloody idiot'.
RYAN, QF can be many things but this one strikes me as extreme- even for QF. There is another aspect of this. If someone asks me questions and I answer them face to face then why wouldn't I be prepared to sign a statement of such?