Have you looked into AnyList? Nevermind, I don’t think they are 100% private. Forgot what sub I was in.

Never tried, but I think it would work. Oxygen is the enemy, but the reason is because oxidation leads to other byproducts that lead to a stale flavor. I believe the cold temperature slows all that down.

I only interned there, but the handful of times I thawed the chips, there were no issues.

You can freeze chips/crisps indefinitely. I used to work for Frito Lay. Just thaw them when you get close to snack time. Of course I never do this because I just eat the chips I have at home.

Extinguishers wouldn’t do much, but you may mean fire sprinklers, but that’s probably never going to be installed. You’d have to inspect, test and maintain that system, and who wants to invest time and money in that.