This show is not worth your time. I'm a pretty big zombie apocalypse show fan too. Here are a few issues (with no real spoilers):
1. Characters aren't suddenly all functioning as trained marine sniper ninja assassins. That's a good thing. However, weeks into the zombie apocalypse, almost every character is weaponless. No guns. No knives. No bats. No sharp sticks. Nothing. This is almost as unbelievable as the school principal suddenly turning into Rambo.
2. Fairly smart, really fast zombies that can't catch overweight middle-aged people. I know adrenaline is a powerful thing, but these people look like they're suddenly able to run a marathon.
3. These chase scenes go through different buildings, blind corners, alleys, etc... Not once has the character encountered another zombie or had others join the chase. That's some amazing luck when the zombies are attracted by the slightest noise or movement people make.
3. No character development. While this isn't a huge deal, they're just kind of boring and uninteresting.
4. Characters don't know where the local stadium is. Are they all visiting from another town? Shut-ins? Every adult remotely close to a metropolitan area could tell you the general direction a large stadium is in. Ridiculous.
You've been warned. If you do watch, I hope you enjoy it more than I did.