Should have went North, and got into oil. They would be paying for you to live in a hotel, and would be making $500+ a day instead of a week.
But if there is a holiday inn express close by, hit that up for breakfast. No one will ask, I stay at them all the time, and often go out the back door and start the truck in the morning, and come in the front strait to breakfast, never been asked.
Walmart won't kick you out of there lot, just park near the back with the RV's. Truck stops are other good options. I have never done this on purpose, but I have come into small places without a reservation only to have the whole town booked up on a tournament and was too late to go on to the next one.