Would BA object if we swapped seats between family members?
If I have family members A and B booked on one ticket in CW, and family members C and D booked on another ticket in WT, would BA object if A and C swapped seats once we were on the plane and A sat in WT and C in CW?
fine if you swap for the entire flight, just explain to crew as you board, provided an adult is not sitting/swapping to a club seat purchased on a reduced child fare.
In your reward scenario i would double check with the crew on board
Not ok if you are considering swapping during the flight so you each do half the flight in each cabin