Commuting from Zurich to Lima via Sao Paolo, ticket bought with Swiss, the Sao Paolo - Lima segment operated by Latam. No office in Lima, only a phone number. Requests for special meal ignored (although confirmed by phone and by Latam contact on social networks). No way to choose a seat on my flight back from Sao Paolo to Zurich: Latam says they have no access to Swiss system, while Swiss says they have to do it, being they are company operating the first segment of the flight.
Sao Paolo to Lima and vice versa is a five-hour flight: operated with an Aribus A320, no flight entertainment at all.
Overall, a pretty disappointing experience, I hope I won't need to ever board again a Latam flight !