Does Saki go bad if not refrigerated?

Could you please elaborate on the shelf life of Saki, specifically if it's not stored in a refrigerated environment? Does the quality deteriorate significantly or are there certain conditions under which it can remain consumable for an extended period? Additionally, are there any signs that indicate the Saki has gone bad, and if so, what are they? Understanding the proper storage and longevity of Saki is crucial for ensuring its optimal enjoyment.