During the fight scene after Samantha and Doug return home Brian J Smith's (Doug) stunt double is visible with a beard.
Sam McKenna mention to her hr husband that the "country ER is always busy". There is no county hospital in Ashland, Kentucky, only the private nonprofit Kings daughters hospital.
Doug and Samantha visit Cloonie's Bar in Huntington, West Virginia. However, in a previous episode it's shown on a map as being in Huntington, Va.