Whenever I get to feeling sorry for myself I can get out of it by looking at what others have to bear. Hurricanes that devistate entire regions and much, much more. I have it good.
A while back I had a low stocked pond that lost power while I was on vacation. The person I had feeding and watching for problems called a hobbiest friend as I had recommended. He said don't feed them. I got back a week later and dumped the stagnent water in the filters and lines, restarted the system and had no problems.
DON'T OVERSTOCK.
Now I have a 500 watt UPS unit operating the air pump and air is supplied to keep up the oxygen while the power's out. The two batteries will keep it operating for a day or so.
An UPS and a small generator can handle a pond so there are no outages at all as long as you can get to the generator within the amount of time the batteries are designed to handle the load.
If you want to keep a freezer operating, you can pull the generator off the pond every 12 hours, or so to get the freezer back down to an acceptable temperature, then put it back on the pond. Staying out of the freezer will lower the heat infiltration.