Do they have tent camping? My sister is retired marine in Jacksonville but ill. I'm trying to put together reservation legwork by phone while traveling on the road, so she'll only have to call to actually make the reservation for us.

Yes

They do have tent sites in the campground.. power and water at the site also.

They do have dry camp sites. No hook up or power. Not sure if I've seen a tent there. I could find out monday for you when I go back.

Thanks all for input! My sister ended up going out there & securing us a camping spot then assisted us w/base pass & check in at Onslow when we arrived.