Must I order a Geocoding Data product for each 5.50 license that I have?
You only need to order a Geocoding Data product for each 5.50 license for which you would like to have geocoding capabilities. You cannot share a Geocoding Data product among several 5.50 licenses. However, users who have many Manifold licenses do not usually need to do geocoding with all of their licenses. Usually only a subset of their users need to do geocoding.