photo (3) by
Thomas Dekany, on Flickr
This is how I picked up our new car. In your case, being that it is silver, chances are that you will be ok, but ask the "detailer" (I guess this one can't even read) if he used a polisher on the paint. This is important. If he used a rotary, you will have a mess on your hands. I would refuse it. On another note, I doubt that they actually used a "WAX" - most likely a glaze. I am surprised that with your previous experience, you are ok with this. May I sell you the Brooklyn bridge?