Welcome to the forum as a contributing member. Jump in anywhere you think you can help, and the only stupid question is the one you don't ask. A couple suggestions. "Kingwood" means something to you, but most of us don't have a clue. Good thing for us to know if you ever need directions to someplace.
Second, parking the RV is generally divided into Full hookup parks (FHUs) which offer water, sewer and electric and sometimes with WIFI and cable TV, and Boondocking with no or minimal hookups. If you have a preference, let us know.
As far as the map goes, there aren't any rules. Mine shows the places I've overnighted in the RV, but I've been in every state except Washington, Oregon and Hawaii, many without the RV. And I suspect that many of us haven't updated our maps in a long time.