So the valves were behind another panel under a cabinet and next to the panel that has the pump. The hoses sort of curl around in that one because it is under the outdoor kitchen. Both hoses go through the floor at least 6 inches after the valves so every part of the water system is inside the insulated envelope of the trailer. Only the black and gray sewer drains are exposed and even then the knife valves are inside the coroplast and wrapped in reflective insulation.
I am glad I found everything and can relax now. If a quick winterization becomes necesary I am ready. I have 4 gallons of pink stuff and an air fitting too so I can even do a mid winter trip if I choose.