Welcome nishabella & Congrats!! Personally, I love to plan and with the help of this site it is making things very easy. Since you are planning for a lot of people you may want to go for a bigger resort that can accomodate you for both the wedding, reception and your stay. I haven't looked into DR or Jamaica as most of our guests have been to either or, so we choose Mexico because of that. Also, since we have quite a few older persons that will be traveling we choose a location that wouldn't be too taxing on them and looked into resorts that are no more than 15-20 mins from the airport. I hope this helps. Happy Holidays