I had an awesome time. There's not much else to add on top of all the other five star reviews. Check out Groupon and their website for packages and savings. I'm not quite sure it would've been worth it if I paid for the full gear. Though we were separated into groups so maybe the folks dressed in full army gear and upgrades got another route different from ours. You will definitely sweat so be wary of dressing in their camo outfit/ gear during summer months. I liked the bare minimum package but next time I'd ask to upgrade to the better gun.
The only critique I'd have is that I do notice that the guys who run it, they talk very fast when they're introducing themselves in a loud and shouty voice. We had a few foreign folks in our team and they had a hard time understanding what was going on.
The guys were great, the zombies were persistent, it was a fun thing to do outside of the casinos.