We flew out of EZE on Aug. 21st. We were on the LAN flt EZE to SCL that depts at 18:50. We arrived via taxi from AEP around 15:36. The LAN check in was closed until 16:00. In all my years of flying this was new to me. An int'l airport like EZE and a airline like LAN, and they are closed until 16:00? We used the down time to get a sandwich and a drink. Once we went through LAN biz class check in, paid our $18USD dept tax, we were through security and in the air side VIP lounge in about 30 minutes. I guess we hit the airport at just the right time. No lines any where to speak of.