Yes, and it was not bad.
Best is when you arrive in your terminal just ask for the counter. In transit there is one for sure.
Upgrades I believe no ( my flights were not full) and I have not heard about it. I did list myself on both flights and it went very fast.
Be aware that you will not get a boarding pass until they close the flight and that gives you not a lot of time to get to the gate and there can be a lot of people at the border!