Yes. And it usually depends how much you are paying.

The more you pay per print, the more likely there will be a human factor.

The big processors(wallmart etc) are unlikely to have the time or skill to go over files before print, its usually a plug-n-go system.

I used to run a print shop - and I specialised in 2 things, Bulk prints, and high end art / photo prints.

For the bulk images I would have a very quick glance at each photo (I saw some things that I really didn't want to some times!!) to check that they were A: in focus and B: correctly exposed, and C: correct white balance. Then de-select any bad / pointless ones and send to print. The printer would apply a slight over-saturation on purpose as i found people liked this more than a realistic print.

For the fine art / photo / gallery prints. I would usually open it WITH the customer on a calibrated screen, show paper samples, offer a mini proof, handle paper with cotton gloves etc - It gets to a point where the customer trusts you to get it right quite quickly, as you also know what they expect. These prints were also archival quality, so should last many times longer than generic consumer prints.

You get what you pay for!