Hi awood12345,
We have the same rules for flying here. That is, the pattern is based on wind direction. (just like full size airfields)
Every club or field that I have ever flown at has this rule. Yes, common sense.

I've seen guys take-off or land downwind (either by mistake, or because they haven't learned to fly right-turn patterns). I'm sure this happens everywhere. Some of the time the pilot doesn't call it out, and luckily nothing happens. Even more fortunately, this rarely happens and no one gets too excited about it ... mistakes happen. Just as long as the mistake can be corrected with calm communication and better flying skills. Most of all, just as long as the mistake doesn't lead to an accident.