Of course, you must really market your restaurant to the public. First, you must introduce your restaurant to everybody. You must make it be known that such a restaurant exists. If you have a theme for your restaurant then you have to introduce your restaurant as such.
But then you also have to consider which market segment you want to target. This would dictate how you would place your ads and other marketing efforts. On it also depends your positioning for your restaurant.
While this is not a comprehensive list for opening and running a restaurant, this hopefully provided some tips and reminders to all budding entrepreneurs and restaurateurs out there.