I've done my part in building a few restaurants, and this is where the "5P Rule" applies:
Proper Planning Prevents Poor Performance.
You need to know EXACTLY what equipment the restaurant will have, and WHERE it will sit. You can assume that some stuff will have to be tied into the Ansul fire suppression system. There will likely be a timer for the outside signs and lights. Coolers and ice machines may have special requirements.
It's also safe to assume that there will be dimmers for the lighting.
Apart from the NEC, the fire marshal and the health department will have their requirements. Clean-up, Path of egress, and testing the emergency lighting are all issues to pay attention to.