A380... is this my first? And empty seat next to me (not first time though)

Totally different 2nd A380 flight experience: window vs aisle, lower vs upper deck, empty seat vs large lady next to me with her elbow digging into my side (feel more sorry for her than myself), good sleep vs no sleep, smooth flight vs one of the most turbulent flights I've been on in recent years. It was on & off for the first part of the journey, then on for a full hour (this video was not even the worst part). It was bad enough that the flight attendants had to take their seats and strap in.