I have to light the pilot on my water heater and it has no electric element (gas only). But I turn it on after setting up at a site (when I remember to light it - usually when my wife asks why there is no hot water). This also implies, correctly, that I remember to shut it off about 5 min after leaving the camp site.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks