When I was working for Sodexo (restauration), I answered to calls for bids and won it, but this just a beginning.
You have to organize the opening of your restaurant : call your suppliers (for the dishes, the food, etc). You also have to prepare the teams that will be the staff of the restaurant or will come as a support for the opening.
You have to elaborate the menus with the chef, create them on Photoshop, make some nice flyers for the opening.
In total, we opened 7 restaurants in the South of France