Question about mailing from Jamaica

Planning our 3rd trip to CSA for July 2013 and had a quesion to anyone who has mailed a package/box to themselves from Jamaica.

When addressing the package, did you use a "return" address ? If so, what did you use ?
Also, I know the resort has a drop box for letter mail but will they take small packages too or will you need to go to a post office for correct postage ?

We are traveling "carry on" only and was just curious, in case we do not have the room for everything on the return trip. I know we could check a bag with the airline but I also kinda like getting something from our trip a few weeks after you are back home. Helps brighten your mood for a few days when it arrives.

Thanks in advance