Ok...my first real travel trailer was a casita
patriot. So, I decided to travel. Somewhere between South Carolina and California I "camped" in a flying j parking lot for the night. Well, that morning I decided to take a shower before getting back on the road. I got in the shower, made myself wet turned off the water and soaped up then, when I attempted to rinse all I could get was a small dribble out of the shower head and it went away quickly. Yes, I'd run out of water. There I was naked, soapy and somewhat cold. I got as much of the soap off as I could using my towel but, I can tell you the day's drive was more than a bit uncomfortable covered with soap scum. That was an important lesson about the limitations of a small fresh water tank.