In my small class C, I have always roughly ball-parked 20AH per day minimum for fridge on gas, WH on gas, CO and propane detectors, charging phones, and factory night-lights for 12 hours. It has gotten me close.
My 40" LED TV and Sony blu-ray take very little through my tru-sine inverter. I want to say off the top of my head they are like 50w combined while running, and about 400ma from the inverter while it is idling with TV off (I turn inverter off when not using.) I might be off track there though, going from memory.
One thing I am sure of is my wife and I and one kid use 60-65 AH per 24 hour period dry camping real-world when we are running hog wild and not trying to conserve and it is cold enough to need some heat at night. If we don't watch any movies and are stingy on lights and heat it is more like 30 AH per day. With two crappy 12V LA in parallel that means fire the gen daily if you are liberal with your power, fire it up every other day if your are stingy. We don't have solar because we are always in the woods.
I am a weekender with kids, and generally not trying to be stingy with power