2012 location at Rond Terrace for Australia Day a big thumbs down. Apart from the fact there is insufficient parking at such a venue, throw in at least 20,000 families with pram multiple kids and bags you end up with a small area packed and not enough room to swing a cat.
By miday everyone had cleared out. In contrast holding it at Commonwealth Park is a much better idea with more room, easier access for families and much better atmosphere that can continue through the afternoon should people wish to stay.
To the organizers of this years event please stick to what works and think about your audience and amount of people who will attend.
Keep it at Commonweath Park in future!