A round at Trump International Golf Club or an afternoon at Malibu Bay keeps the car parked in the open for four or five hours. That is long enough for a boot left ajar or a pair of sidelights to flatten a tired battery. If you come back to a car that will not unlock or crank, send us a pin from the car park and say which entrance you used.
You do not need to be a resident. The technician reaches the visitor car parks the same way anyone else does, tests the battery on the spot and fits a new one only if the test says it is needed. Either way you leave under your own power.