Serfty if you are after tickets to the Fremantle / Melbourne game I dont think you will have too much trouble. My team Melbourne are quite .... however Subi doesnt hold a lot of people so it often does sell out. If you are keen I would get the tickets as soon as they are released to the public.
Unfortantely a lot of the tickets will be given to Fremantle members so there isnt a lot of tickets available to the public. Avoid any seats at the city end as you will be looking into the sun. I enjoy watching AFL along the wings but its a personal preference. The only thing I would add is the sooner they knock down Subi stadium the better as its a dump.