We leave our coach plugged in. Hotwater heaters, water pump off, frig on.
In the tag door bay curbside, we have 3 breakers I trip to the DDEC and ATEC, so they don't suck the life out of the 12 volt side of the chassis batteries. This way, the coach can stay garaged for months, if time doesn't permit a monthly 50 miles spin around the block.
It has taken owning 3 busses, one Country Coach and two Marathons and countless questions about flat chassis batteries, for someone finally last year at Prevost to show us these breakers. It takes about 3 weeks for the DDEC and ATEC brains to drain away the batteries.