The fizz should stay longer if kept in the fridge because if you take away energy (make it cooler) you will lower the solubility meaning that it won't saturate the air in the fridge.
The refrigerator.
You should first cover it with a lid then store it next to the milk in the compartment in the fridge door or on a high shelf in the fridge.
Becauses are more soluble at lower temperatures (opposite of solids like sugar and salt) to keep soda carbonated (carbon dioxide gas dissolved in soda) is should be stored cold like in the refrigerator.
There should be an expiration date on the container. But if there's not, then it should be good for about a year unless it's been opened. Once opened, store tightly covered in the refrigerator for about two weeks, then discard if not used by then.
in a refrigerator
IF the soy milk has not been opened you can store it at room temperature in your pantry or something. After the first use and it being opened you have to put it in your refrigerator.
That is where I store mine.
no it will be spoilled
Pickled beets can be stored in the refrigerator for six months to a year when they are opened. Unopened canned pickled beets are recommended safe for one year, if the seal is unbroken.
According to Buchtmann, you shouldn't store an opened can in the fridge once opened, as "the can dissolve into the food, giving it a metallic taste".
Store opened flax milk cartons in the refrigerator for seven days.
Refrigerator
In the refrigerator. It will get moldy if left out at room temperature.