The RV fridge did great until ambient temperatures rose above the low to middle 90's and then it was a struggle to keep items cold in both the refrigerator and freezer even in the shade. Our fridge is in the slide which causes issues with air flow behind the fridge even though we installed additional cooling fans to improve air flow.
Our installation included a 10 CU FT fridge, 1500watt inverter, 30 amp transfer switch, power meter and 2-6 volt golf cart batteries. Both fridges fit through the door.
Most of our travels are at locations with full hookups in the summer and typically in the southern states and prefer to have more food storage, frozen ice cream, cold milk and everything kept below 40 degrees in the fridge and below 0 in the freezer. Since the modification we have been very pleased with the results and has met our expectations. No more ice milk for ice cream, no more fetching bags of ice, no more damaged food.