Our 2008 Heartland Bighorn was built back in the day before residential refrigerators made it into luxury and four-season 5th wheels. Heartland currently offers residential refrigerator options in its Luxury Fifth Wheels, Full Profile, Luxury Toy Hauler, and Destination brands.
We've got one of the old "glorified dorm fridge" units, and its 8 cubic feet of storage is adequate for just the two of us in most cases, but there are occasions when that same amount of space can be either a frustrating curse or an unexpected blessing.
When our 19-year-old, 6'2", 220-lb son lived with us in the RV for two months over the summer of 2016: definitely a curse. I had to play Refrigerator Tetris on the daily to make everything fit in there. Adding a third person to the mix — especially one that size — created an entirely new family dynamic, and not just in the kitchen storage department.
However, when we need to empty the fridge for extended non-RV travel or for off-season storage: definitely a blessing. If we're willing to eat a few unusual meals (recently we ate ham and cream cheese sandwiches, because we'd already run out of cheese slices), the two of us can strip that baby down to condiments in less than a week! Oh, and don't worry about that wine bottle you see in the door. I'll make sure it does not go to waste.