I hate to think of how many child zombies there will be wandering around your town when the initial outbreak occurs, Natalie. Just think: "You asked a million questions in the movie theater", "You were screaming in the restaurant", "You were throwing a fit in the grocery store" every time you have to take one out. It will make it easier. >:D
There was! On Oct 19, in Orlando, Fl. on International Dr. in front of Wyndham Resort, a Zombie Walk happened as a part Screamfest Horror Convention. Lead by Bill Hinzman, Tom Savini, Barry Anderson, & Gary Klar. But I only saw Bill Hinzman for the Zombie Walk. There was way too many people to spot everyone.
Zombie Walks (or Lurches) are really just a better organized flash mob. All you have to do is put out the word that it's happening at a particular day/time/place and see who shows up.
I am going to try and make this. I have heard about these, but never actually gone myself.