I just registered domain name for one of my client running restaurant. The client asked me to provided him few samples of design to choose one from it. I had glance to couple of very beautiful themes but not sure about the future update of these themes. I am looking for theme to have mobile version and future regular updates free with good support. Its worth to mention the theme should be mix of services and food.
You will have to invest something - money for a theme which already has design that you need, or work in case of a free theme. I recommended the theme for the 2nd option, idk about the 1st. “fancy theme for restaurant” doesn’t mean much, I think you should be more specific about the site content and the desired style.
Just make a google image search, look for the best theme that suits your needs and go for it : Fancy wp theme . I searched for fancy restaurant wp theme :))