Thinking of some other helpful information that you might want to know regards car rentals, and transportation to your hotel.
You can go online and take a look at what is available (Hertz and Avis are at the airport) from a number of different frachises, and independent companies flood the island with rentals.
VW Beatles, Jeeps, sedans...keep in mind if it a 4x4 it is disabled, so no 4 wheeling. Scooters are also available, but I would suggest you avoid renting one.
One thing to keep in mind is the insurance issue. Your credit card will not cover you in case of accident. You would have to file a claim with your CC company AFTER you pay for any damages here first.
I would suggest that you purchase full coverage.
I would also consider purchasing the flight and medical insurance available when you purchase your ticket. You will pay first for services, then be reimbursed from your insurance company. There is one clinic that I am aware of that does take, and process some medical claims, but if you have a problem, finding that clinic may not be a priority.
Wanted to mention upon arrival you will be greeting with a line up of folks asking you which hotel you're going to. They are Timeshare sales people, so you might want to just say, "got it covered, thanks".
If your transportation to your hotel is not included in your package, you will need to purchase your transportation ticket to your hotel.
The booth is to the right as you exit customs, purchase your ticket(s), walk out the door and you will be asked which hotel you are going to.
It's easy, but if you don't know upfront, it can be confusing.