Let me be the first to welcome you to OC.
I don't have as much experience as many here do but I have enjoyed it when I'm able to get a chance.
I too live in a state that frowns upon OC so I too have to travel.
I live just 20 and 30 miles from two little towns in Mo where my wife and I OC. We would OC into a little grocery store and now it's posted so we don't stop there anymore. We have been asked the same questions but because we frequent the little gas stations and such we are polite when asked. Most of the time nobody even blinks an eye. Have fun good luck and enjoy the freedoms that have been fought and died for.