your fish will be fine without filtration, but aeration is your issue. anything to churn the water pretty good will keep them going for a day. not an option for you unless someones home, but when my power cuts out I just use a big ass spoon and churn my tank water every 45 mins or so until powers restored. ghetto but I've never lost a fish and have had some 5-8 hour outages.
as suggested, battery powered pumps, bait and tackle are the best bet being that they are a general live well accessory.
as suggested, battery powered pumps, bait and tackle are the best bet being that they are a general live well accessory.