Your restaurant can be improved in a number of ways. First, you will soon discover that you can open up to 3 restaurants at a time. All of these restaurants can be expanded in size from small to medium to large. They can also be moved from smaller, less populous regions to more populous regions.
As you discover better tables and decorations, you can choose the ones that are most appropriate for each store's demographics. You can also, to an extent, manipulate the demographics of your stores by remodeling with Bearington Construction.