My SunLight pop up has an old Dometic 3.5cf 3way fridge. I measured the power draw and consumption while running strictly on 12V (no LP). It drew almost 6A from the battery, at about a 50% duty cycle. That is 72AH per 24 hour day.
I'm sure my 8cf fridge in my 5er draws more, but it doesn't have a 12v boiler. I do know it draws close to 3KWH (250AH at 12V) per day when running on 120VAC.
Compare that to an energy start rated 18cf household fridge at about 1KW per day, not counting losses in the inverter. The new, high efficiency
12/24V compressor fridges (Secop compressor)
only use about 600W per day, and run directly off of 12V so no inverter losses.