I do end up spending the night at walmart - Bryan, the gunslinging kiosk worker revealed he had lived in his truck in the parking lot of walmart and gave me very specific directions to the best place to park.
I found the quiet corner lot occupied with only one or two other campers and slept peacefully, despite trying to rouse myself in the middle of the night when I heard young excited voices praising the messages on my truck, one young womon saying seeing my truck made her whole day, no her whole month, no her whole life! Try as I did, I couldn't get out of bed but just listened to their passionate chatter.
This walmart closed at midnite but opened a 6am when I was out of bed and heading from the back parking lot to the front door and the bathroom. First I was concerned about the early hour and making myself too visible but when I rounded the corner, I saw the parking lot was at least half full of early morning shoppers! I had to count over 50 cars and trucks already in the lot. UFB And not one junker among what could have passed for a dealership lot.
I decide to take the short 1.2mile walk in the cool of the morning to the Hardscrabble storefront where my reading will be today or tomorrow - I'm hoping for today as I've reservation at Acadia National Park beginning tomorrow and I'm hoping to be able to flyer a little around Bangor on my way to Bar Harbor!