It sucks, but three days is OK if you have water. There’s plenty of water....
It isn’t clean water.
That is really the number one myth of survival, that you need food. Three days, all you need is shelter from extreme heat and cold, and enough water to keep from being dehydrated.
Assuming they don’t actually drown in the meantime, they should just hunker down with a good book and enjoy the solitude. And also cook the meat in the freezer before it spoils :-)