Given that the 27th of January is a weekday, not only will you get something to eat in each direction, but if it's an early enough flight in the morning you'll get a free newspaper, and if it's after 4pm for the return flight it's free beer or wine included too! As for the meal, for MEL-SYD it's nothing spectacular, cereal in the morning, a roll at lunch, pasta salad at dinner (or similar) and snacks between times - but still better than an empty tray table .