That's "summer nats", not actual Nationals. I did Summer nats last year and have been to Blytheville twice. Bad town, awesome site! My favorite pro solo course of all time took place there last season. For an idea of what the course looks like, this is a clip from 2011 at the final Blytheville event that year:
http://www.youtube.com/watch?v=3nBkydYMtP0 I highly recommend it to anyone, best courses you'll see all season!
I will not be at Summer Nats this season, just Spring Nats and actual Nationals.