Yes, it is a real club. You can go there and rent the room Bond-Craig was in. Read about it here in my eBay listing:
http://www.ebay.com/itm/152580896711?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.com/itm/162547219586?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.com/itm/152573099656?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

Or just click these links:
To read more about the Club and filming in the Bahamas, click here:
http://www.bahamas.co.uk/about-the-bahamas/film/james-bond
http://www.jamesbondlifestyle.com/product/oneonly-ocean-club-bahamas

http://www.antiquegamblingchips.com/StillsA_TopMaleStars.htm#jamesbond

Robert
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