how were they cited for pub intox and not dui?
My guess would be because they were on a private drive (thru) rather than on the road.
i don't think it matters
Traffic law's that enforceable on private property: reckless driving, careless driving, drunk driving, suspended driving and handicapped parking violations. These are automatic , Some states have statutes that extend all public traffic laws to private property that is generally open to the public. Kansas isn't one of those states. Although I'm unsure of Oklahoma laws, I'm 100% sure that they could /should have given them a D.U.I based off of officer's statement.