In two weeks I will have a overnight layover in Nashville BNA airport. I'll arrive 23.30 and depart again at 06.00 in the morning. Since I only have 6.5 hours at to spend the night there I don't think it is worth to get a hotel room. Instead I plan on sleeping inside the airport but have never been to BNA before. I have already taken a look at sleepinginairports.net but would like to know if anyone here knows anything more about the airport. Is there an area (inside security?) that is open all night?

Thank you for any advice!