Any other Islands close to St. Maarten to visit during Xmas: St. Martin Forum

[gidat1]

Hello: New to this forum and new to Carbbean Islands .

I have a time share reserved for Dec 15-22 in St. Maarten, flying there from Fort Lauderdale.

I am looking to extend the Vacation by few more days in a near by islands> I HAVE LOTS OF POINTS ACCRUED WITH SHERATON HOTELS AND COULD USE THE POINTS FOR ANY OF THE SPG HOTELS>

AMERICAN AIRLINES FLIES FROM SXM TO POURTO RICO> ANY SUGGESTIONS FOR TAKING A BOAT OR A FERRY TO NEAR BY ISLANDS>

I HAVE BOOKED ONE WAY TICKET ON SPIRIT AIRLINES BUT HAVE NOT RESERVED THE JOURNEY BACK

THANKS>> ANY INPUT APPRICIATED>