Here in Arizona it is a different vibe. I know these seem contradictory but -
1 - if you are crossing a lane on foot in the parking lot, turn your head away from on-coming traffic and just keep walking. (Apparently, either they don't want to see what's coming or want to have plausible deniability that they stepped out in traffic.) So you have to be very, very careful in lots.
2 - conversely, as the driver, simply ignore anyone trying to pull out of a parking spot (unless you want it). Speed around their back end if necessary as they are backing up. (In NJ most folks did yield to the car backing up, probably because in NJ they assumed the person backing up would just keep going into them).
And, as someone noted, not only are stop signs (and red lights) optional in Tucson, so are speed limits. We have very few highways, but the way folks drive on the streets it isn't any wonder we have had a lot of pedestrians killed over the years.