I typically stay next door to nirvana at white sands. They have a great bar that is typically open until 10pm. I feel very comfortable on the beach there late at night. I would also assume there is a night security guard on the beach at nirvana to watch over you if you are just hanging out late ( there are night security guards at white sands too). While I don't take long walks on the beach after dark, I feel fine hanging on the beach in that area after dark.