Hi Mimi-Ann I am getting married in Cuba Feb 2024. I met a destination wedding planner at bridal show. The resort we are going to is not on her list but she still was able to communicate with them on our behalf and handles contacting airline for group rates etc
So your best bet is to speak with a travel agent. They will handle all things wedding with the resort/venue you decide on, tell you when you should book and also give you and your guests the best group discount rate!
They would have a variety of resorts with photos and pricing at each place you would like to look at.
If you plan on getting married in February of 2025, be prepared to send save the dates February/March 2024 so people are prepared to spend the money to come out to your destination wedding.