Welcome to the forum and above all, congratulations for your engagement!
Have you thought of the Riviera Maya? One of the best things about Riviera Maya is the fact that you can get everything you dream, and it goes from the simplest things, up to the most elaborated... I am certain that you would love it.
To check out various resorts, a good place to go is the hotel review section on tripadvisor.com and the venue reviews here. TA will not offer many wedding reviews, but the list is probably more extensive and you can come back here to learn more about wedding experiences. I would suggest using both resources.
Your wedding is going to be full of magic and this website will help you a lot!
We wish you the best.