What specifically can you carry on the plane when traveling to the caribbean?

Only for people who travel overseas and also how are you supposed to pack your toothpaste, toothbrush etc.

You must pack your liquids and gels in your checked luggage, or u can use travel sized items in your carry on.
Remember, under 3oz packages, all in a quart size zip lock baggie.

I suggest a travel size toothpaste, sunscreen and deodorant in your carry on, just in case your checked bag gets delayed.
I also pack my bathing suit and a change of clothes.. just in case.

I would suggest that prior to traveling that you visit the TSA website http://www.tsa.gov/ they have the complete list of what is and is not allowed in both your carry on and checked luggage.