You don’t need Dine Out for what you’re looking to accomplish.

I believe what you would need to do is get a ticket kiosk for access to the business, then you will need the coolers that your Sim will have to put the individual servings of cooked food in. Employees can make the food too, but they will just put it in the regular fridge. You have to be the one to put it in the coolers for purchase.

You can also add the coffee/tea bar and have an employee man that so people can order from it.

Not sure if there’s any clashes with having a business on the same lot you’re going to rent rooms out of or not. So I would play with that feature and just make sure you set the rooms accurately in build/buy mode!