I discovered a downside of being angled away from the aisle.
I was never offered a pre-departure drink on a flight this weekend, and I thought no one had been, so I was patiently waiting, while watching a movie. But then I saw them coming around collecting empty glasses from everyone (else).
I guess I missed it because you're not staring into the aisle where you would easily see someone walk by with a tray of glasses. Although I'm still unsure how they didn't offer me one.