Walmart generally allows it, but if local ordinances don't, you can't. You can't in the Mountain View Walmart, I assume for that reason. I ended up there once o

Walmart generally allows it, but if local ordinances don't, you can't. You can't in the Mountain View Walmart, I assume for that reason. I ended up there once on an 8 month road trip and they asked me to leave. But there are so few good places in the valley that they may have had to disallow it in order to not become an RV lot.