obgirl--the arrival form is f*ed up. Whatever date you put in, it always defaults to a different date. They have real geniuses handling this on behalf of SXM government, as it's been f*'ed up from the beginning and they still can't seem to fix it. You need to look at what date it shows and correct it while you are online, when it is wrong. I don't think there is any way you can correct it after the fact, unless you just go in and do another form from the beginning. As Lee says, worst case scenario is that you have to do it upon arrival at the kiosk.
Don't know about the sargassum either. Seems to be a crap shoot. Enjoy your trip!
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