I would go to Wal-Mart since I live near it. I would pack a few of my firearms. A BB handgun (light, low amount of damage but could stun a zombie) and maybe a rifle, probably a 0.22 cal or a sniper I have both and for sure I'd bring a shotgun. So any of those two. I would also bring a good amount of food with me. Once I get to Wal-Mart I would organize everyone into groups of two. We'd begin to ration food and sort firearms (found in the sports section). I would take some of the computers they have either in the staff area or unbox one in the computer department and try to connect to the internet to post about the safety of Wal-Mart. We'd block off all the doors. Since they also have those TV's displaying ads I would change all the ads to a zombie apocalypse tips guide (not hard to do once in the control room). I would also set up some sort of warning system. Possibly have a button or if the door sense tracked something it would go off. The doors would be pretty well barricaded with stuff anyways. There also may be some security cameras around the place too so I could watch for zombie's outside. I would organize the people in groups to patrol the store and make sure they heard no noises. I would find a way to get on the roof and take all the stuff out of the garden area and grow crops if we ran out of food. The best reason to go to Wal-Mart in an apocalypse is because most people will have ran away already so you don't have to worry about trusting the right people.