When I did cd in the run up to my wedding, I stayed on 810 right up until the day of the wedding because I needed to shrink in to my dress (which I managed to the point where it was almost too big!) but, as a result, when I went on honeymoon to an AI resort, I carbloaded spectacularly and, as a result, put on 27lbs while away..
If I could recommend anything, move up through the plans before you go. Irrespective of whether you're there or not, you can always get back on the plan again when you come home and you'll do less damage if you're used to having carbs!
While you're there, make healthy choices, watch your portions and stay away from the cocktails - we had beach waiters bring drinks on to the beach every 45-60 minutes, so we had one each time.. I dread to think how many calories I drank and that was with non-alcoholic cocktails too!! It's the hidden calories you'll need to watch!
But also bear in mind you're on holiday, have fun, watch waht you eat 90% of the time and enjoy the other 10%!