This is security in their unit and is a mandatory item that needs to be replaced for their safety. 

Will they literally tear every wall down inside in order to isnpect everything or will it be a basic inspection for certain safety measures, means of egress etc..Seperately I may have lost zoning due to the lack of previous owners rental license.

Another good option if you're hoping to be as hands off as possible would be a triple net lease commercial deal targeting strong fast food chains, etc.

- so the disposal catches the food debris and chops it up??) 

Low cost of living, lots to do, great food, etc.

If you have to spend money it should be on mechanical systems, safety, or something that will allow you to raise rents.

@Scott Mac that's great....my Burger King Whopper test is D --Definitely do not want to order from this BK--probably have many health code violationsC--maybe order if desperate but strive to get to a B or A area--in the A area, you're whopper will look like the commercialIt's funny but fast food restaurants can tell you a lot about the neighborhoods too--never thought of that but I have my red line areas that I will never order from and pretty much there the same areas I wouldn't buy in.

I am no expert on this.You will have to go up the food chain to get your answer if the STR folks at the desk can't help you. 

What sort of safety measures would you undergo to make sure I can execute if things go south?

No bank wants to provide a commercial loan for the building+ costs without a general contractor submitting plans and 30% down (reasoning is that food is high-risk and the business has no food history).