I didn't take photos but it was just one of those holiday travel days from JFK-LAS today. Didn't seem to be many medallions on this oversold flight as I was #3 of 4 for 2 BE seats.
Seated in 10D on a 738, I noticed 2 girls in 1AB with their shoes off and on the bulkhead wall, high enough for me to see in Y. Across the aisle from me, in 10AB, I noticed the same thing. Feet high up on the bulkhead. Even next to me in 10E, the man went shoeless, albeit, he kept his feet down.
As if that wasn't enough, I saw many passengers walking the aisle in their glorious socks towards the bathroom (no way in hell would I be shoeless in a plane bathroom).