2 of us are flying GRU-FRA on Saturday. Got a super cheap one way in economy, but the $850 lowest bid option may be a bit too rich for us :/.

Anyone know if LATAM still sells upgrades at check-in on the day? Interested in seeing what's available there.

^as for the above about multiple passengers, I thought your bid had to cover every passenger on the reservation? Can you upgrade just 1 person?