The wife and I are doing a trip in F to DXB in May and my mother has expressed interest in joining us for the jaunt. Alas she most likely (unless she gets very drunk before she books it!) won't be in First, CW is more likely. We are taking the dayflights both there and back (BA107/108).

Would she be able to have her CW meal with us in the guest seat in F? Is this classified in the uncouth/disruptive/taking the piss category?

I've never had the opportunity to invite someone up from another cabin to join us. If I'm feeling really chivalrous my mother might be the one asking me to join her from J

Cheers
Fraser