City is collapsing under the weight of a zombie outbreak, there's a military quarantine to keep people from escaping. Obviously a lot of people are going to try to escape because it's not safe to stay in zombie city, but for the people stuck inside, what exactly would their priorities be.
Hospitals would probably be overrun because initially infected people would have been taken to them. That means setting up field hospitals.
Wold people try to rob a bank? The rest of the country would still be using the same money so...
- Rob a bank in a zombie infected city because, honestly, what are the odds any surviving police would even give a shit?
- Escape zombie infected city.
- Be rich in the wonderful non-zombie infected world.
Not even a step of ??? before you get to "profit". Great for the opportunist.
Returning to less self serving things:
You'd need to keep at least one pharmacy going, and it would probably need to deliver.
A fire department is a must because otherwise all of those people throwing Molotov cocktails at the zombies are going to burn down the city and, without buildings, where would you hide?
It might be a good idea to have some kind of news source, and while die-hard traditionalists would want it to be a newspaper, a radio station probably makes more sense. Saves you the trouble of delivery.
You're going to want to work to keep the power on because no one wants to fend off zombies in pitch black.
Water running is important too. Surviving the zombies only to die of dehydration is not a fun prospect.
But what else?
What does one do when in a city overrun by zombies? Seriously, I'm looking for ideas here.