The dreaded A10 gate has just come up for my BA287 to SFO, departing at 2:30. I'm currently watching the football in the cinema room so was wondering what's the latest you should go to the gate. I've been lucky and have never departed from A10 before.

I guess i shouldn't go as soon as it says Boarding, as we'll have to hang around anyway for the buses, but i don't want to wait too long.

Any experience?