Best to take the pessimists view on this subject. "hope for the best and prepare for the worst", play 'what ifs' to identify problems.
Mine runs to NIL gas, and major electricity disruption, which means COOKING is a problem. Not much good having 300Kg of rice if you cannot cook it. Hard to make porridge with out heat! No power means no ducted gas heating, the fans will not run. Extra warm clothing. Live like they did before Edison came along. A big stack of heavy candles, and BATTERIES! Good battery radio or two!
Learn all about Thermos Flask rice cooking! Learn how they survived in Argentina, Germany, Zimbabwe, and Venezuela!
Hobo stoves, spirit stoves, 3 burner portable BBQ, the back yard BBQ etc, with LOTS of fuel. (Got all that!)
PMs are all about long term survival, the above gets the wife and kids fed.
JMNHO
OC