To give you an idea of how much it seemed like quidditch, here is a picture of a quidditch pitch.

Here is a picture of a Australian football stadium.

Not much different, save the brooms. I couldn't find very good pictures of either, so you may just have to take my word for it.
The rules are very complicated. If you kick the ball through the middle two posts, it is six points. If it goes through any of the posts in any other way, or hits the post and goes through, it is worth one point. Pretty much anything goes when it comes to hitting and tackling, unless you hit someone on the head. Other than that, the game gets pretty rough, and they do not wear pads. It reminded me of rugby in that way.
The game was very fun but the atmosphere was different than I expected. It felt more like a baseball game than it did anything else.
Made me miss my Tigers.