[Festus2]

Yes, there is a thermostat which is set at the factory and isn't "adjustable" so you have no control over the temperature. For faster hot water recovery, you can use both electricity and propane to heat the tank at the same time but the amount of hot water will be the same - except that fixed amount will be heated more quickly.

Some people have removed the OEM shower head and replaced it with an Oxygenics shower head which claims to use less HW than the regular shower head. There have been positive reports from members who have installed one of these. CW carries them but I'm sure you can get them elsewhere.

I don't think you're "missing anything" - except perhaps a long, hot shower. Think "Navy".