Another way to look at this:
How was turbulence handled aboard 747-100s fitted with the upper deck lounge and L-1011s with the lower deck lounge in the 1970s? Maybe passenger safety regulations are also part of the reason they are no more...
How about FAs in the lower deck galley? I don't remember there being a folding seat in there, but I could be wrong. How about passengers sitting (almost put the 'h' in there
) on toilets? This applies to all aircraft. If there was genuine concern for passenger safety in case of unexpected turbulence, there should be a seatbelt on the toilet. You can laugh, but lavs are fitted with an oxygen mask... now what happens more often, unexpected turbulence, or loss of cabin pressure? So if you are taking a dump and the aircraft decompresses you will be fine, but sudden CAT hits and you earn a skull fracture. Go figure.
So will the 'hypothetical' A-380 casino, shopping arcade and exercise gym be fitted with oxygen masks like the regular seating areas and lavs? How many? Where? Was it even considered?
Very interesting topic. Make people think about this