Hi. A piece of advice from an old lady... stop stressing! Planning a destination wedding really isn't all that difficult. You're in Toronto so I think it's a bit harder for Wright Travel to help you out since they are US based. If you want a name, I have 2 that I can give you both of which I've used. One for our wedding in Jamaica, and one for other travel but they're both great.
First of all, you've decided the where. That's step 1. You've also decided the when. That's pretty much step 2. What about your budget? I'm not sure where you are in Toronto but you need to get a travel agent to help you out with your trip details. It will take the stress off you when it comes to your guests planning their trip. They don't charge for their services. That would be your next step. But, I was just told yesterday for the date I'm looking at in October 2015 they don't even have rates yet and won't until this summer. So, since you still have a lot of time, there isn't much you can do in terms of getting your travel costs. Have you done a guest list? That would definitely be a good step to take. Figure that a lot of the people you invite won't make the trip so be prepared for that. Do you know what colours you want? Something else you can look at. Do you know who your attendants will be? Does your FI have his best man? How good are your DIY skills? There are tons of ideas on this site that you could look at and figure out if they interest you. And of course, there's your dress. Have you started looking through magazines or online to see what style you like? You could be looking at pictures of bouquets if you want and trying to figure out what you like. What about doing online research on your resort? Do you know what's in the area, or if you want to set up any kind of excursions for your guests?
If you're anxious to be doing something, there are lots of small things you could be doing just to put your mind at ease. But given how much time you still have, I would say the best thing is to relax!!! As Tammy said the wedding coordinators at the resorts know what they're doing and will help you put together a day that you'll remember for the rest of your life! And it will all be wonderful!