Congratulations. An excellent report on your meander. I have a 2.5 litre drink jug in a thermal cover strapped to my pillion
peg with the drink hose running up the right side to a small cable tie through one of the zip pulls on the tank bag. There is enough hose through the cable tie to allow me to simply raise the front of my Shoei Neotec helmet for a drink. You had the advantage of fast interstates to achieve your higher average speed. All good. Now that's behind you, the planning starts for the next one.