A system includes an operation receiving unit and an operation control apparatus. The operation receiving unit is operated by a user. The operation control apparatus controls a first device at a facility to enter into an operating state in response to a user operation being performed at the operation receiving unit during a first time period determined by reservation information. The operation control apparatus also controls a second device at the facility to enter into an operating state at a start time associated with the first time period, regardless of presence of a user operation at the operation receiving unit.