Recently had a return flight from SYD-SFO cancelled due to equip. Had to stay one extra day and was happily put on same flight 24 hrs later. Res was in C class (UAL).

After boarding for the return flight, there was a delay to manage the load. All passengers in the second section of the C class seats on our 777 were reassigned to seats on the perimeter of the plane. A number of families were separated. Once accomplished, we took off with all 16 center seats empty.

Once meal service was complete and lights turned down, primarily all of those 16 seats were occupied by FA's who slept/lounged until just before lights turned on for pre-landing services at which time they all disappeared.

Strange?