i dunno for a wheel bearing it might be a good idea, they would have unhooked the tie rod and if it gets turned at or the adjusting nut gets changed your allignment will be off.

As far as wheels, that bullshit. allignement is independant of the wheels unless you are running 15s on one side 17s on the other. Think about your car sitting on a flat surface and then think about it on the same surface with 1" boards under each wheel. the suspension is going to be unaffected.