You'll find information (horror stories) all over the 'net about quick-change places, and of course, like fast-food joints, it all depends on what's it like at the one near you.
My closest Mazda dealer offers a quick-change service that's within a few bucks of the "Jiffy" places, but I've never used them.
For convenience sake, and having read about the multiple fasteners and process to get the 5's lower engine cover removed (and re-installed), I ultimately decided to do it myself. Takes me about an hour, start-to-stop, no rushing, including the tire rotation. The AutoZone near me always has a service special running on 5 qts of good oil and a good filter for under $20.