I leave my chickens unattended for 2 to 4 days from time to time... they’re in a secure coop and run, and I feed them in a large metal feeder ( easily a weeks worth of food) and a couple of large waters, as well as a roll out egg collecting nest box and a poop collection area under the roost that keeps things clean....
... my point is, if you set the coop up with this in mind leaving for weekends and holidays is not an issue...
... but yours is a good point for a new chicken owner to think about before hand.
Edit: I see others replied while I was typing... to say much the same thing