Have looked back through the last few pages of this thread as I've got my first FLUB situation coming up on a flight I just booked. It seems like there's no hard and fast rule other than picking something too early could result in being kicked back...

Currently the 772 cabin has 13 unassigned seats 2 weeks out. Could Rows 1 and 2 open at OLCI?

I'm taking a connecting flight beforehand where there's a Flagship Lounge, and then an Admirals Club before the FLUB flight. Would either of them even be able to move into the seats or is this something only BA staff or lounge staff can do?