We are getting married May 2017 (different resort) and chose a photographer based on the style & reviews.
To help with your hesitation, look at photographers websites, reviews and testimonies (they can be found all over the Internet). This should help weed out the posers!!
Also, your photographer will send you a contract to read through before you put your deposit in, this should help clarify all questions and worst case scenarios, etc.
Hope this helps!!! I'm sure whatever photographer you go with, will take beautiful photos and everything will work out wonderful!