> I was wondering about crates and being accused of cheating. Say you find a crate right off the bat that reveals the map, and your opponent reports you for map hacking. Will you get in trouble for this, or is there a way to distinguish between the two?

It depends what kind of evidence there is. If you stretched your power and barracks too far and place your refinery or war factory at the same time as your opponent, there's no chance you got a crate.