An insulated container is provided with a lid having a push-button trigger mechanism that operates both a shutter for a drinking orifice and a vent seal for a vent opening. The trigger has an actuation stroke. The vent seal is initially actuated during a first portion of the actuation stroke of the trigger to transition the vent seal from the closed position to the open position, and the shutter is initially actuated during a second portion of the actuation stroke of the trigger to transition the shutter from the closed position to the open position. Further, the shutter remains in the closed position during the initiation of the first portion of the actuation stroke of the trigger.