I think if you are honest with yourself you already know the answer.... What you're suggesting is crazy. Do you really need to be told this? You already touched on many of the more obvious reasons in your post.
Honestly, step back... take a deep breath... and look at the situation with as much objectivity and common sense as you can. You already know the answer.
Kudos to you for wanting to spread some generosity around, but the resort staff in Guardalavaca are absolutely swamped with gifts from the resort tourists. The black market there is huge, you're not helping anyone in need.
If you plan on getting off the resort and travelling into Holguin or even Gibara then there are organizations there that are happy to distribute your gifts appropriately. Otherwise, just enjoy your vacation.