I'm getting married in Cancun at the Crown Paradise, as a recommendation from a travel agent, and it has been GREAT! They have really reasonable prices for my guests right now, $1080 a person for air and all inclusive hotel for 7 days 6 nights.
They also don't have huge fees for using outside vendors like many of the other resorts. I only have to pay $150 for my photographer and my make-up and hair person can come for free. We also have an option for a private 3 hour dinner for $30 a person which also includes a DJ. The wedding coordinator, Evelyn, is also very easy to work with via e-mail.
Hope all works out!