In chronological order:
http://www.flyertalk.com/forum/showthread.php?t=139394
http://www.flyertalk.com/forum/showthread.php?t=139519
http://www.flyertalk.com/forum/showthread.php?t=352731
I don't remember an all-inclusive package, but we always prefer to rent a car, get out, and explore. Kittitians and Nevisians are some of the nicest people I've met on the planet.