your car has already crossed 1000 km.
btw, first free inspection is basically nothing fancy.. they just check the nuts and bolts of the car , check oils, etc. and nothing else ! if you can check the oils coolant levels etc. yourself, there's no need to take your car to the dealership before the oil change. (will it void your warranty or not, i have no idea about that).
btw, if you still want to take it before 1000 km, they won't mind checking it and entering it in your warranty book.