I am a huge Water Port supporter. I got one in May 2018 and have used it on three trips to take full blown soap and water showers, wash dishes, and rise off the back of my rig. This little rig has a ton of options which make it more versatile than the Road Shower.
1. Capacity: < 4 gallons
2. Three (3) Pressurization Options (Max - 50psi):
a. Use garden hose fitting to fill and pressurize all in one go
b. Fill to 80% and use air compressor / bicycle pump to pressurize via built in schrader valve
c. Purchase optional cap with built in pump to pressurize
3. Removable / Portable - One can take to any water source and fill with non-potable water and utilize
4. Multiple mounting options
I am not too worried about water temperature when I am hot, sweaty, dirty, stinky. I just want to be clean, and the Water Port does the trick.
Note: Keep in mind this basic procedure when using as a shower: 1) Rinse down - turn off water, 2) Soap down, 3) Rinse off . Otherwise you will most likely run out of water mid-shower. Not good! I'm glad there is no video of me refilling tank with bottled water in the raw. LOL