not to assume that a mass volume alignment shop will do the job correctly just because a guy told them they could do it without even looking at the parts involved every day of the week. You may as well learn to live with it.
If you cant tell for yourself whether or not they are doing the job completely or not by watching them, you will wait until you are months and thousands of miles down the road before you find you have been ripped or not. Nothing you say changes that.