"Ladies and gentlemen" in this proverb can be understood as guests or customers, while "we are" stands for employees or service providers. In other words, this maxim means that employees should provide services to their guests with the attitude of "ladies and gentlemen", that is, they should show noble quality and good professionalism.
Caesar Ritz is the name of a five-star hotel. This motto is one of the hotel's service concepts, which aims to emphasize that employees should provide quality services to guests with noble quality and professionalism.