I'm sailing out of NYC to the Bahamas next August. One of our ports is Nassau. I wanted to go to the water park at Atlantis while on shore. The shore excursions I see listed that allow you to use the water park are included with other acitvities which are, although great, rather pricey. Or at least more expensive than I would like to spend. Is there a shore excursion just to use the water park that I am missing or can I go there on my own? TIA.