Welcome!
As to Turks & Caicos, I can't help you there as I was married in Jamaica. However, when it comes to deciding against being just the two of you or your friends and family, thats tough. You really need to do what your heart is telling you. I felt really strongly that I wanted my family there as they mean to much to me, but looking back it would have been really nice to just be the two of us. That being said, I dont regret having my family and friends there at all. I guess there are pros and cons to either way you do it. Just ask yourself if you do it just the two of you will you have any regrets about not having family and friends there. Good luck with your decision!