I'm of the opinion they drink and eat.
How else would they support their frames? Plus if they exercise that's also less support from hydration and sustenance.
Also if you don't stress the evolutionary aspects of your system i.e. eating/drinking i.e not using your mouth/organs. What if it atrophies basically use it or lose it scenario.
We aren't supposed to be greys that rub hydrogen peroxide treated protein rubbed unto our skin for absorption.
I can understand the ability not to die or ignore the hunger if your busy but how else would they support their chemical actions. Even if highly spiritual you can't just fortify without sustenance.
I do think they eat and drink far, FAR superior stuff for example. This thought it silly to some people but we've discussed this before in higher civilizations either they use money for lesser evolved people or they rely on energy exchange. Certainly it's strange manifesting energy from the aether and exchanging it for clothes or hamburger.
But it begs the question if the Gods have surpassed and made agriculture obsolete. In other words if you can materialize the perfect food both the best minerals, vitamins, nutrients(macro/micro), chemicals, and a hint of negativity to stress the detoxing glands and organs. Then why should people farm unless they are into it and like farming or cultivation of small garden.
Again if they are eating and drinking don't be surprised if it's the best of the best even if it's just what we consider cheap food like for example drinking milk but the milk is beyond what is found on Earth.
I know it's strange stating that but if the Gods peer into far ahead then it makes sense either they continue agriculture and do it right. Or they've evolved past agriculture and realize eventually you gotta go beyond agriculture there's just too many mouths to feed.