Two cars share most carports, with a wall on one side and the neighbour's car on the other. If the dead car is the inner one, the outer car usually has to come out first, so have its key ready. On many European cars the battery sits in the boot, and a car reversed up to the wall needs pulling forward before the boot can be opened fully.
None of this stops the job. The technician can power the car from his jump-start equipment, enough to release an electronic handbrake or shift it out of park where the model allows, and he will not force anything that needs a workshop. Tell us on WhatsApp how the car is parked and he arrives with a plan.