If you hire a car with the airline's partner you have a long wait at the car hire desk. I like Hertz but when I go on Ryanair I use Sixt.
Only time ever found that was at SNN about 10 years ago, at Dublin recently landing late with a lot of flights in the evening I spent all of 15 seconds at the desk.
Rarely have waited any length of time and probably used Hertz 150 days last year in multiple countrys.