SCL - There are a couple of lounges and an Admirals Club. Both the LAN lounges offer free internet, a selection of snacks and booze. Snacks are generally chips, sometimes sushi, cheese, and sweets. I think I've seen spanish-style tortilla too. Not really enough to make a meal of IMHO, but enough to stave off hunger. There is an open bar but I can't comment on what booze is available since I don't drink when flying. There are fridges with selections of juice, water and soda.
It can get pretty crowded but I've always gotten a seat. There are 3-4 computers for public use too