All pickles need refrigeration, once the jar has been opened.
no,
Yes it does need regrigeration.
Once it's open, any mayo needs refrigeration.
Refrigeration
It slows their spoilage.
No
For proper heat transfer. If the beans are dry, the heat of canning will not penetrate evenly. You could end up with underprocessed beans that will either spoil or cause illness.
In my experience, a tuna fish sandwich can survive for some hours without refrigeration - you can take one to school with you in your lunchbox - but for any longer period of time, yes, it would need refrigeration.
True-brand refrigerators are designed for commercial use, such as restaurants. If you really need this type of refrigeration in your home you will have to visit a restaurant supply store. Also, before you buy be sure your electrical system is compatible.
Yes you need to freeze them before baking.
YES!