I did the bumper, fender, hood, and roof (mirrors and lights included). It's been a year and a half now, and the bumper and the area behind the wheels seem to get most of the hit.
I actually end up hitting a tire tread and damage and stain the bra 3 months ago... the re-wrap was expensive since there's a cost to take the original off. It was good since the original wrap didn't look good and insurance took care of it. The 2nd time = perfect and got premier to blackout on the tail lights as well. They hook you up with discount if you keep going back to them.