Food in boxes must be six inches off the floor, drains must work properly, sanitizer in dishwasher must be correct, proper scoops in ice machine, mold in ice machine, raw food must not be stored...
Check the restrooms. If they are clean, in good working order and well stocked with soap and clean towels, that is a good sign. Also take a peak into the kitchen and see if it's clean and tidy. Same...