As far as I am aware parking is not free..
Sorry I don't know, check with the hotel. I live in Tassie so don't drive to Melb airport.
No, the parking is expensive
You can score a booking with parking included sometimes by booking on their site.
Normally it is just for the time of your booking - so if you want to leave a car - when travelling - not much good.
Could still stay at Park Royal but just use on the nearby car parking companies. Park your car and they will drop you at airport right across the road from Park Royal
Get an answer from PARKROYAL Melbourne Airport staff and past guests.