Join Date: Jul 2005
Location: London, ARN, HEL, ..... or MAN
Programs: BA GGL / GFL, Mucci Diamond!, HH Diamond, Radisson VIP, FB Gold, LH Sen, Hertz Gold
Posts: 6,481
Can't explain 1,2,3 D as I don't think they are particularly special seats - in fact they are probably among the worst on the plane. 8G is the bassinet position so would only be prebookable if travelling with an infant.