Chuds,
The economy cabin is totally full, not a spare seat showing
Only empty seats are in PE and UC, so they are correct, its a situation where they will have to move people arround to satisfy families sitting together.
fairytail,
of course you can't checkin online with an infant that has no seat, computer cannot allocate a person to a non seat, this has to be entered manually. If you are being upgraded, again, your seat allowed by the computer is in Economy and has to manually be moved to PE.
Because of the peanut allergy, the ability of other people to have peanuts has now been removed so we all cannot have peanuts, whether in the food or the nice snack packs that used to be available.