Probably fine, if all of the following are true:
--enough water, that they usually do not spill or kick full of bedding
--water will not freeze
--enough food (doesn't matter if they spill it, as long as they can pick it back off the floor)
--enough safe space. (Either the coop needs to be large enough for them to stay in, because no-one will let them in and out; or the run needs to be so secure that you can leave open the pop door and be confident that no predators can come in.)
Optional:
If you have a camera you can set up, that lets you view from wherever you are going, then you would be able to check on them remotely. And if something unexpectedly goes badly wrong (like a tree falling on the coop), you could either rush home or telephone a neighbor to ask them to address it.