For those planning their connection from the Airport to the bus pickup point.
Langley Park is on the northern foreshore of the River Swan in Perth CBD. That is less than a 30min bus ride from both the domestic and International Airport Terminals. Its also close to all the major Perth hotels, so the main shuttle buses should be fine.
In fact it will be easier for you guys to get there than those of us who live in Perth, as getting a bike, luggage and oneself on public transport, will be a real pain for locals.