Have located a 77 Argosy rear bedroom

that was at a campsite about 10 miles from the shore for at least 7 years.
Had a window AC mounted in through rear window.
Exterior skin/paint looks pretty good in photos and rear wrap windows are intact. Interior is unknown. Have been lurking on this forum long enough to expect repair$ or replacement and a long road to fini$hed.
Am arranging for an Airstream knowledgeable RV tech to accompany me to inspection. Is there an area that should receive special attention during inspection? Should the exposure to sea air concern me?