Most flights within South America are economy only, and the recent introduction of "Light" fares made the checked bag a pay add-on too. No idea whether awards include it, so please let us know when you check-in.

There is "Premium Economy" on certain international routes within South America, but they're just blocked middle seats like BA's "Club Europe", but the drinks and food is excellent. A notable exception is the SCL-IPC (Easter Island) flights which have true lie-flat Business class, but that's about it.