Welcome, relish.77!!!
Regarding suggestions where to have your wedding...
I would highly recommend- Paradisus Rio de Oro, Holguin, Cuba. It is great 5* resort, but it is now adults only. You might want to consider Playa Pesquero as well if you have children coming to your wedding.
I been to Paradisus Rio de Oro and if you have any question I would gladly answer them.
If you are considering Dominican Republic - Majestic Colonial resort in Punta Cana is a very popular one.
Let me know if I can help.