I am certainly in the “If you go fridge you’ll never go back” camp. But for your use I think the Yeti will be a better investment. Fridge is better if you’re going out long enough where ice refill will be necessary.

You will want a secondary power source for redundancy to run the fridge if you go that route. I run a group 24 agm battery with an always “on” dedicated outlet from the battery to the trunk. I can usually get 18-24 hours of runtime on this battery before the girdle shuts off due to low voltage. We also carry a Goal Zero Power station for backup. Our 400Lithium can run the fridge for about 16-18 hours. Our 1400 Lithium 3-5 days. I’m soon to be installing solar on the vehicle so that they are no longer “necessary” to bring. You’ll also want some sort of emergency jump starter just in case.

I say all of this because I love our fridge but it will take you down a power consumption rabbit hole. The cooler is easy...but it is nice to never have to worry about ice or soggy food.

Edit: for either you can get away with just some cargo tie downs until you decide a better alternative. I have our system in my build thread linked in my signature.