I wouldn't carry anything more than a SAK. It is all that a tourist needs. If you are going to Sandals or another of those tourist-resort-package-deals, you need not worry about security. These places are as secure as fortresses, with high walls, locked gates, and shotgun-carrying guards. They have their own private beaches as well. If venturing outside, do so as part of a guided tour only. A few years back, a couple of foreign tourists got murdered (throats slit, ear-to-ear) by the natives when caught alone outside after dark. The country has strict laws against weapons, be they firearms or edged weapons. The police are in a war with heavily-armed criminals and have no patience at all for people bringing more weapons into the country. The police are so paranoid that they accidentally fired at Jimmy Buffet's plane, thinking that he was a drug smuggler. Stay at the resorts, follow the security precautions that they suggest and the only thing that you might have to worry about is a bad case of sunburn!