for a weekend warrior, just use a cooler.. I did for decades and was completely content.. it was not til we started going on multi-week adventures and had issues with loosing food (customs opening everything up and not closing it correctly) or finding ICE (out in BFE, it can be time consuming and expensive).. The biggest thing that moved us to a Fridge tho was backpacking, If you leave base camp for 4-7 days a cooler is not going to ride that out unsupervised in a hot bear locker, or vehicle.
Its not just the fridge, but the underlying power requirements that make it a daunting proposal.. u wanna be able to start your engine and stuff after a few days soaking in the sun, that adds weight.. its alot of complication and expense for little return, even if you try to do it cheap.. until you start spending weeks/months out exploring at a time its more of a luxury than a necessity.