Good point. Everybody is the neighborhood will be competing for limited food resources. There's what, one day's supply on the shelves? Raiding stores could be a dangerous undertaking.

I also agree that the buildings probably won't all pancake together. The foundation may start to give and the building may start to lean, but until the authorities come around and actually condemn the condo, it should continue to provide shelter.

Have multiple kits. Inside the condo, in your cars and in your storage unit. They won't all be destroyed.