I took a flight from London to Singapore on a brand new British Airways 747-400 some time in 89 or 90. When I say brand new I mean they were literally pulling the plastic covers off the last few seats as we were boarding. There was maybe 20 to 25 passengers on a plane that seats ~400. Crew announced as we were getting ready to board that they only had enough first class meals for the people that paid for it so outside of that cabin we were free to take any seat we wanted. It was to this day my greatest flight ever. Empty, spotless clean and a crew member for every 4 or 5 of us. Not creepy at all, amazing