In both Restaurants & Cafés lighting has a vital role when it comes to vibes and energy of the entire space. Feng Shui always emphasizes using natural daylight as the most favorable for any personal or business space.
For that same reason, Restaurants & Cafés should ideally have very large windows to allow as much natural light as possible during the day and when it comes to artificial lighting, the most beneficial would be those yellow-based lamps since they stimulate the appetite of the guests.
During the day time - breakfast and lunch, Feng Shui advises bright lights (if there is not enough natural daylight), while at evening - during the dinner time, lights must be dimmer.