Somebody deciding where to eat on Saturday is doing something closer to browsing than searching. They want to see the room, read a few dishes, get a feel for what sort of evening it is and roughly what it costs.
That means real photographs of your food and your dining room, a menu written out as text rather than hidden in a PDF, and enough about the kitchen and the people to make you a place rather than a category. This is the half that most sites skip and it is the half that fills tables.