I live in PA and looked up the GS of NC where you live and which your provided. Section (8) says this:
(8) On any private premises where notice that carrying a concealed handgun is prohibited by the posting of a conspicuous notice or statement by the person in legal possession or control of the premises.
Since this is the office to the whole resort, according to section (8), this would mean the grounds.
Wow, and when I was reading I found that you cannot carry at a rest stop along the highway in NC either. Geesh!! Remind me not to stop at one when I travel through NC next time.
It is lawful to stop at a state-owned rest stop... this is my error in reading.