Very efficient. There might be non-mandatory offers for insurance and vehicle upgrades, which you can politely decline.

Was charged an extra 200 euros when I got home

I had to wait over an hour and a half to pick up my car on Friday 2 July at the Nice airport.

Surprisingly there was a long queue and the staff were doing their best but also were helping each other with issues so waiting times exceeded expectations. I assume though it was a one off thing. The car was parked horribly. There was no space to open the door not to mention the distance to the next parked car was maybe 20cm. I had to get in the car from the back seat and crawl to the driver seat ! I hope this won't happen again. I will yet try Europcar again.