Anthony,
No. Any repairs or changes to the sway bars will not affect alignment. Installing new shocks shouldn't require an alignment either.
However, for most other suspension work (control arm bushings, tie rods, ball joints, etc.) you really should get an alignment done, preferably at the dealer... they're the only ones I've found that know how to align a Benz properly! Some independent alignment shops can do it, but they're pretty rare...
