How Much Propane is Used....

Not much.

The fridge flame is not much more than a large pilot light flame. The propane usage is further extended by the fridge duty cycle, only igniting the flame as needed to keep the fridge cold.

Good points. Considering it is summer I guess I'm only using the propane for the fridge while driving (if I'm doing that) and for the water heater. Guess I should be good for a while.

We fill 2 20 lb tanks at the beginning of the season and dry camp probably 24 nights. Have never refilled or run out. We only use the furnace occasionally to take early morning chill off. I use the range/oven every day and we use the water heater. We typically run with the refrigerator on. So much depends on outside temp, shade available etc.

Very little is my guess. I always travel with my bottle open and fridge running. I can go practically the entire summer without changing a bottle. As I rarely use my stove inside if there is a perfectly good grill ring outside during the spring/summer months

In the winter i obviously use more for heating, and i cook inside alot