I always ask people on FB if I can repost their pictures. Some respond, "no problem", others don't respond. Nobody has ever told me no. If those who don't respond have a problem with it, they'll tell me and I'll take them down.
So far, all pictures of Orient Beach that I posted here, I got permission to do it. See hereunder.
I can repost someone else's pictures on Facebook without permission so I assume it's the same if I repost them somewhere else.
Not only they have no private character whatsoever but I also assume that if they're posted on a social site like Facebook, it's because there's no copyright involved.
Am I correct?