You might find this exhaustive checklist useful: MY14 QA Checklist
The checklist focuses heavily on alignment of trim, etc., which seems to have been a problem with many early-build vehicles. I couldn't see any problems on mine. I did ask the dealer not to install any dealer decals. Some people prefer not to let the dealership prep the car (they may leave swirl marks), and in some states you might not want them to drill holes for a front license plate. If you want to remove any of the standard Jeep insignia, you could ask the dealership to do that for you.
I suggest you schedule the pick up early in the day. You want time to resolve any issues, and good visibility for inspecting the vehicle.
I got a full tank of diesel, and the DEF level was full too. That seems to be true at many dealerships, so I think you should expect that.