For what it's worth, my two cents.
My installation:
4 130 watt panels
Magnum MMS1012 PSW 1000 Watt Inverter
Magnum MM-RC50 Inverter Remote
Morningstar TS-45 Charge Controller
2 Crown CR-240 6 volts batteries
Bogart TM-2030-RV Battery Monitor
All installed myself.
My experience:
We camped in the Arizona desert for two weeks.
We ran the furnace every night.
We ran what ever lights we needed when we needed them. (all non-LED)
My wife ran her CPAP machine all night, every night.
We ran the water pump as needed.
We ran the refrigerator on propane but it does draw a small amount of 12 volt power.
We watched television every night as long as we wanted.
The batteries were usually drawn down to around 70% full by morning.
By 2:00-2:30 pm batteries were back to 100% every day.