1. Hospitals
    That's where all the sick go. Why subject yourself to that?
  2. Police stations
    Way to many guns. History shows cops sometimes have difficulty distinguishing the good guys and the bad guys. And their ability to control crowds, really?
  3. Military bases
    For the same reasons as police stations. Just more so.
  4. Cemeteries
  5. Wal-Mart
    Do you know the kind of people that frequent those places. And a Zombie greeter just won't bring in new business.
  6. Airports
  7. Cruise Ships