If the birds have food without water, you can run into situations like crop bind.
If the weather is particularly hot, I'll keep a water feeder hanging inside our coop at night. But most of the time I keep food and water outside as I don't like water soaking my bedding ( I keep my chooks with ducks, who like to snort water and blow it everywhere to clean out their bills ).
If you keep them from water and food at night, it's best to give them access to water first before feeding in the morning. I'd vote against feeding indoors at all, as vermin will quickly learn where to find food, and you don't want to be sharing those kinds of bacteria with your birds.
Try to get into the habit of always closing your birds in at night. It's just better on the conscience. One massacre is all it takes to learn that lesson though.