Dealership detail shops are almost always a bunch of flunky hacks, and it never improves, because the management and principles at most dealerships are numbnutzes as well when it comes to proper detailing and workmanship.

I always tell them to wash it, and then leave it ALONE. I do the first full detail MYSELF.

If you're totally clueless when it comes to the art of detailing, well...... then you probably wouldn't notice the difference anyhow, so you shouldn't care about any of this.

Bottom line, do it yourself, or ask friends who seem to have a handle on good paint upkeep to recommend a private detail shop.