The good: LATAM is excellent at unloading and loading passengers. The have the passengers lined up and ready to board as soon as the last passenger is off. Really efficient. The bad: LATAM's check in process is so chaotic that you wonder whether they really want it to be that way. Far too few check-in staff, sometimes only one for a line that stretches way down the airport. Or check-in people sitting behind "CLOSED" signs. Poor or non-existent signage. You just have to get in line and suffer - or stay home. The reward is a short security line because everyone is trapped in the check-in process. It's totally frustrating and invites a Valium.