We've been 14,000 miles all over the country with our bus and usually stay in truck stops, rest areas, and Walmart parking lots when we're not boondocking. Never once have had a problem. If you go to a Pilot, Flying J, or Love's you're also allowed to park overnight in their regular front parking lot. Often they have actual RV spaces up front. Keep in mind we also have a goat that lives in the back of our bus and is clearly visible. And two dogs and three cats. No one has ever given us grief, even when we park in the back truck lot with the generator running. Most of the time the truckers are admiring the bus rather than being grumpy about us taking up a space. We also have Reflectix cut out for each of our windows that we hang in place with a piece of tape when we need it. It works great for times when you'd rather not have someone peeking inside. One 25'x4' roll was sufficient for all the windows.
My build thread:http://www.skoolie.net/forums/f11/build-thread-for-haulin-oats-and-goats-11237.html#post113500
A gal, a guy, three cats, two dogs, one rabbit, and one goat, traveling the country together.