A few years back I was on LHR-ABZ with BA and some genius had managed to scatter the whole of a school year (?9 year-olds) from Banchory Junior School and their teachers and family at random through the aircraft
One lad was in 1A and there was no-one around him (he thought it was bloody marvelous of course)
Common sense prevailed and the aircraft was "reconfigured" to put the school party all together in the back with an adult on each aisle seat
An American lady started to complain but the flinty looks she got from the other passengers soon shut her up