You all have made excellent input and it is much appreciated. My agrees with taking a cell phone and stop being a stubborn ass. Damned if she is right again! I will proceed with mapping the route manually, but will take the cell phone as a backup. Turn by turn through large population areas is not practical, but I am going to give it a go to see how long the instructions become. I will listen to my smarter half and take the phone, too!
FWIW, in no way would I have attempted to navigate Tokyo back in the day without the map someone provided me before I got there. I cannot imagine how crazy it has become in the last 40 years.