Nature Center: Free for everyone to walk through, the nature center has a butterfly pavilion and a few enclosures with native animals such as boa constrictors, toucans and scarlet Macaws. Wildlife talks and tours are held at various times; check the Harvest Caye schedule onboard.
Lifeguards are on duty at all of Harvest Caye's beaches and pools, as well as the Splash Park.
Harvest Caye's beachfront is one long stretch; it's not really broken into unique beaches with different names. Generally speaking, the farther you are from the ship, the more privacy you'll have and the quieter things will be.
The vibe at Harvest Caye's beaches can vary, depending on which ships or cruise lines are visiting. With a Norwegian mega-ship, expect crowds and a race to snag an umbrella chair. On days that small Oceania Cruises or Regent ships are at the island, it's a much more serene feel; you have the whole island to yourself.