When Kodak installs the new machines, they will be set to run automatically. I recommend switching it over to manual release for both network and kiosk orders. The computer will not care that nobody is there to clean it up, and will keep printing until the trays are full. Also, the new printers don't come equipped with a back printer ribbon, so the only way to determine which pictures go with what order is to look at the history of each one.
Also, the installation tech will activate new features on the kiosks that your lab just isn't capable of handling. Be sure to go in and set things up for what your lab can do. My lab has a new feature of being able to print the same picture in different sizes on a single 8x10 sheet that apparently we're supposed to slice perfectly for the guest with nothing but scissors. Also included: 4x6 picture books (no covers) and 4x6 greeting cards at 4x8 card prices. If you have a 2nd kiosk that isn't connected to the Prints in Seconds printer, he'll tell the kiosk to share but won't actually connect it to the instant printer. I've had my lab for about a month and I'm still ironing out all the new bugs.
All that said, the new lab is very simple to maintain.