I always turn mine on when we get to the campsite.
I turn off the switch on he WH and the circuit breaker when leaving and packing up when DW is finished cleaning inside.
Not using any propane while traveling this way and it only takes 30 minutes of their electricity to get hot water, AFTER insuring there is no air in the lines so the WH is full. this prevents burning out the electric heating element
2012 Wildcat Sterling 32RL, Gladiator Qr35 ST235/85R16 Load rating G, TST 507 TPMS w/ Flow-thru Sensors & Repeater, Reese Sidewinder 16K Pin Box, PI EMS HW50C
2008 Chevy Silverado 2500HD CCSB LTZ Diesel, Fumoto Oil Drain Valve, Turbo Brake activated, 39 gal Aux Tank W/ Fuel Pump transfer, Air Lift Loadlifter 5000 air bags.