The problem with plugging your shore power into an inverter is that anything that is plugged in will begin to draw power unless you turn it off first. That includes fridge, water heater, cell phone chargers, laptops, lamps, you name it. We ended up with an inverter for the front tv and sat receiver and we heated water on the stove for coffee in the morning, pouring it through the coffee maker ourselves.
We did this AFTER we had installed 420 watts of solar and had 320AH of battery because while 320 amp hours sounds like a lot, it goes fast. If you are using batteries all evening, there won't be enough left to power a keurig; the AMP draw will take the inverter below its safety margin and set off alarm bells. Really unpleasant before morning coffee.
