I was aboard an AA regional flight a couple of months ago where the pilots made no prepare-for-landing announcement, there was no double-ding on final, no cabin announcement live or recorded, in fact the FA was in the aisle picking up trash and gabbing with passengers until I waved at her and said, hey, judging from the view out the window, we're about fifteen seconds from the piano keys. She made a run for the rearward jumpseat and was not quite buckled in when we touched down. On that flight nobody, flight deck or FA, was paying any attention to safety regs at all. It happens.