Q is a town in flux, the days of selling out of the back of your car is being replaced with permanent or semi permanint buildings. At one time it was huge flea market but the City Fathers are trying to make it a little more uptown, but the majority of the residents and others are still RV oriented so anything you need will be available.
Be prepared for the weather. Might be cold, hot, windy, rainey or perfect. Camp fires are permitted and if you go far enough it is free, not like in the BLM camp grounds.