its called planning, book a silver service cab to pick you up, give them the flight number your on before you leave, and they will pick you up from the airport, as an added bonus, tell them to wait at the Hire car wash area as it will save them the $2 fee! and the rate is the same as a normal cab.
they have been there Every time i needed a cab, no waiting! and the 300 mtr walk is good for the legs after sitting for a while.