You MUST have a noisemaker if you need to operate an air cond unit or two.
Otherwise there is no need , however the equipment selected to live aboard , not camp out, is different and very specific.
In other words much of the house junk will need to be replaced.
The biggest power hassle is refrigeration , and that is easily solved with an RV , or better an Amish style Servelle propane reefer.
Installation will require knowledge and care.The Servelle has thicker insulation, no electronics.
With propane aboard cooking is a snap 4 burner gymboled range and oven/broiler is OTS at sailboat outfitters.
Heat would be a Dickinson floor standard Antartic , or a second oil fired range like a Dickinson Pacific.
Neither require electric , choice is a matter of space.
Toilet,, pure mechanical with crap tank.
With LED lights interior lighting is a snap.
An 85W solar panel will assist , but requires a good charge controller.
Pressure water uses little DC power , but an OFF switch would be a good investment , and a foot pump will double or triple your tanks endurance.
The OTS marine hot water heater would have an engine loop ,good for a day or two, and/or a RV propane hot water heater for endless anchored out.
Our boat is outfitted mostly as described , sits on a mooring when required with cold beer ,ready for use .
Cruising we do not have dedicated house / start batteries , simply 2 #8D truck batteries with one secured at anchor..
We start the 6-71 with the in use (house supplier) and let it charge by it self till the voltage gets to 13.5 or 14V , then join the two batts.
Alt truck 135A with std external regulator.
IF our engine on time was very short a 3 or 4 stage V regulator would be installed.
I would recommend an SOC meter for most folks.
AC toys , radar oven , blender are handled with 1600W (2500surge) cheapo inverter under $200 and used perhaps 5 -10 min per day , if that..
Entertainment is auto AM ,FM + XM radio , tho a DC TV is aboard , for use mostly in seeing local weather .
$100 Car radios are remote control (Sony) and sound quality requires a good speaker set.
This has worked for a decade or so ,ran the loop left and right , and AICW many times with no dead batts ever.
And we Live Aboard while cruising , not camp out.