This thread confirms what I have always exerienced: if there's ever going to be a problem with lounge access, it will happen with BA.
Their lounge dragons are mostly brutal in the extreme. I've just completed a DONE4 with PartnerJohnM's two young twenties kids (effectively my stepchildren). Did QF, AA, IB, CX have a problem bending the 1 guest rule ever so slightly for an obvious family? - No. But BA was the complete opposite.
It's easy for me, as a WP, to say some of this thread doesn't concern me but WTF is it with these names: 'Galleries', 'Terraces'. Who wants to try and sort out the pecking order in weird names? It just sounds like a scheme for pulling the wool over people's eyes and causing complete confusion. The BA door staff surely must hate it as much as the misled and confused customers.
My recent experience made it clear that the lounge dragons were under very strict orders. What a schemozzle. Trust the Poms...