But I hate parking in walmart, I'm mostly nocturnal, I work night shifts because the jobs are really easy to find just about anywhere in security or at hotels, and the only requirement they typically have is you can stay awake. When you go to sleep at the walmart durring the day, you got carts banging around, and cars and screaming kids... no thanks.
As to blending in it sorta depends on where your parking, sometimes it helps you to blend in, sometimes it sticks out like a sore thumb (like if you try and park that cargo at night anywhere above median income housing).
As to the newer styles, like the sprinter... well if I had 14-16k to drop on a van I'd probably do it but as it is I can buy a 90s-2000 dodge caravan for less than 1,500 bucks and repairs are dirt cheap (lots of used parts), gas milage is great, handling and acceleration is WAY better than a big cargo van, and it steaths better than anything I've driven so far... and no stigma. I'm even considering sticking a bunch of those kid praying, family holding hands stick figure decals in the back window, I would bet money you'd be hassled 90% less with those as much as I hate them. Loving married mommy of four generally is not assumed by the PD to have warrents or be on parole... avoiding the profiling the cops do to vandwellers... priceless.