I live in a earthquake + tsunami zone too.
There are supermarkets just down the road and I'm very capable so no concerns in that respect.
It's just a case of getting the hell outa here if the big shake comes. The house is tied down to the foundations so it will (hopefully) just boggie about then end up back in it's original location with just cracked walls and other minor stuff
No gas and the electricity is someone else's problem.