I wouldn't get rid of the light sweater. That can be pretty useful on the plane and the very rare chance that you will want a light coverup on an evening by the water.
The only time I've ever needed a jacket was during a few northers in December and January.
As for lotions and potions, suntan lotion, bug spray, a little bit of calamine lotion, a little bit of sunburn cream, and some cortizone, if ya got it. All that said, you can buy sunburn potions and corizone lotions, if you find you need them later. Definitely bring along some Benadryl.
Bring sandals that you don't care if they get wet and muddy.
You don't need any interior wear, that I could imagine. Bring capris and t's, if you want.
You can take matches in your checked bags but not lighters.
Bring at least two bathingsuits and as much underwear (especially bras) as you can stuff in your luggage. And boys, close your eyes now, I'm going to advise littleng to bring pantyliners too.
I'm not saying you are going to need these things, but I always have them in my luggage: immodium, peptobismal tablets, extra-strength acetominophen, gravol
There's a few other handy things too, but you don't have time to go and get them. Next time.
Don't worry, you are going to have a blast and there isn't anything you are really going to miss, as long as you have your toothbrush, deodorant, bathingsuits, a couple of pairs of sandals, a sarong, a pair of shorts, 2 tank tops and something to pull up your hair if it is long. Carry those things in your carryon. Everything in your checked luggage should be expendable.
