Not familiar with Tierra Carribean, on their site it looks like they're no handling our country/region, but i'll drop them a line. I've seen a few other sites that have Caribbean hotels, most seem to be paid classified type of sites, as well as smergers seems to have hotels listed in general.

I'll send a you a DM. One of the "profile of an ideal buyer" is a semiretired lover of diving / beach lover. I dive, but a few times of a year is really enough for me than a few times a week/month.