Avoid metallic accessories as they will be detected while going through the metal detector.

When checking out(especially if you will be picked up by a transfer operator) ensure that you go with the operator who's wearing the company's shirt of which you previously booked with.

Lock all belongings and keep with you at all times.

Pack all liquids and gels appropriate, ensure that its not in your hand luggage. 

You can take some USD in small bills in case you want to buy things you might like

Please visit us at anytime and I'd be happy to assist you in finding the best places to visit. 

http://fantasytransfersandtoursjm.com/