Who is a drone operator
A drone operator is any person, whether natural or an organisation, who owns the drone(s) or rents the drone. You can be both a drone operator and a remote pilot if you are also the person who actually flies the drone. However, you could be the remote pilot without being a drone operator, if, for example, you are a pilot working for a company which provides services with drones. In that case, the company is the drone operator and you are the remote pilot.
If you bought a drone to fly it in your leisure time, you are both the drone operator and remote pilot.
If you bought a drone to give away as a gift, the person who will receive the gift and then fly the drone will be the drone operator and the remote pilot.