After ATC closure at Avalon in the 80s, the tower was staffed temporarily for certain aircraft. For example, the F1 GP cars were transported together on a single 747 freighter. Arriving about 2200 and leaving four hours later. ATC was the freight company’s requirement, insurance I think. There was also All Nippon Airlines 767 and 737 training for which the tower was staffed. QANTAS did its training without ATC unless the tower was staffed for another operation.