I was thrown off by the lack of front parking sensors also, especially because most of my other cars have sat really low instead of really high.
I set up my garbage cans in my driveway and practiced with the camera (the lens' distortion makes it a bit tricky sometimes), getting accustomed to where the bumper actually is (from my vantage point, the hood is 10 feet long). Now I feel a bit more comfortable in tight parking lots. I still park like a retard, though, always encroaching on one lane or the other, or forgetting to turn my wheels straight (they will easily spill into the adjacent spot if not straight). Oh well.