Originally Posted by
corporate-wage-slave
I've never seen trim issues on the larger B737/B767/A319/320/321 series, and I can't ever recall seat shifting on Domestics either, there's no curtain issues there either. This includes very low loaded services, e.g. on Saturday afternoons. The risk is on LCY's Embraer service, where I've certainly seen it happen, though Golds and above are sometimes exempt. On the 12:35 to LHR I can't see any risk of being shifted.
That's very surprising! I've seen 18 rows blocked on A321s domestic (with a load of 60 passengers), most of the cabin on 737s blocked (with a load of 12) and most of the cabin on 767s (again with a low load).
On each occasion, golds have been "exempt" and kept their preassigned seat with a big gap between them and everyone one. A few times as silver I managed to get a seat towards the front and keep it.