Camber bolts are fantastic for correcting when ordinary adjustment yields insufficient range.
Even without camber bolts, loosening the two lower bolts of the front shock absorber and rocking it sideways gives you around one full degree of adjustment range. Often that is quite enough, and every line up shop should routinely use that method. If they don't, they disqualify themselves!
I have adjusted front camber and also to-in to neutral, being best for economy. You can check and correct it very accurately yourself,