Originally Posted by
Rescmajster
if i remember well on CA there is no check-in online, so need to go to the counter in advance and fight for the best seat...
I think this was the case up until about a year ago or so, for US at least. I remember I had to stand in line to check in at LAX back in 2013. They began OLCI some time after that as I remember doing it for a friend. Not sure if it has the ability to change seats during OLCI though.