Well I would be fucked if it happened tommorow because the only grocery store from my house is about 10 miles away, I have a publix about 2 blocks from my house but it has been closed for 3 months considering a sky-diving plane crashed into it.
Eh... I think I'd be ok. If we could live off the land we'd have it made at my home. Fortify the Dam or the Lock Gates and Live on it, simple enough. We have a literal arsenal in my house alone not counting the local hunters and their guns, F- the gun stores. For some reason, through, a golf course not too far from where I live was marked as a danger area... so I guess I have to be wary of straggling golfers in a Zombie SHTF Situation.
can Zombies throw stuff? If so you have to beware of flying golf clubs, and Zombies clumsily driving golf carts.
My zombie apocalypse plan pretty much consists of building a Vault 101 so to speak. And living there with 100 other people forever. And forever.
It will be safe but you will need people to leave to Vault to find food, otherwise you will just have to eat them Radroaches.
Last I checked the zombie apocoylpse hasnt happen ( yet ) so for all we know zombies could be 50 feet tall and eat zebras.