There is a misconception that the only thing you can adjust on a solid axle vehicle is the toe in/out. I took an '89 Jeep Cherokee (same basic suspension as the TJ and JK) in for some issues. When it was delivered back to me it drove the same way. I immediately turned around and went right back. I was then told by one of the co-owners that the only thing adjustable on a solid axle is the toe-in/out. I left fuming for I knew that was not correct. I never went back to that shop and a few years later they were out of business.
Instead I found the shop that has done work on my vehicles for over 25 years and they also do a lot of commercial trucks and the local Sheriff Department's patrol cars. When I took my TJ in with 113,000 miles, they did install cam bolts to adjust the camber. But, it is stock and the only other option would have been adjustable LCAs which would have been far more expensive. I it were lifted or was taken on even moderate off road excursions, I would have gone that route.
As for camber, it can be adjusted, but it takes someone who knows what they are doing and is done with shims. Most alignment shops (I call them get 'em in and get 'im out shops) will not tell you that as they don't want to expend the effort and time to do it.
In the case of my TJ, the tech came to me, explained the issue and what it would cost for the cam bolts and how much more time and labor it would take. While it drove ok before, it drives great now.