Thank you, everyone, for the responses. Sounds like I might be OK without one. This at least tells me I shouldn't buy one in advance, but wait and see how the fridge performs, then decide.
Our pop-up is only a couple years old and the fridge in there works awesome! We have to turn it down once it gets cooled off to keep stuff from freezing. So hopefully this one performs just as well.
Now if I could only find a way to remove the freezer section from the little outside kitchen fridge so we'd have more room for drinks in there...