I had the pleasure of visiting Iberostar Rose Hall last year for vacation and to scout out the property for our 2011 wedding...my fiance and I stayed at the Suites and visited the Beach property. (which you can do as a Suites guest...Grande guests can visit all three properties; however, Beach guests can only visit the Beach property)
We're scheduled to jump the broom at the Beach property on 10.8.11. I would say the Beach property is the most economical and frankly, I went that route because I wanted to provide guests with differing price points although ALL of the Iberostar hotels are beautiful and all within the same resort compound. The Beach & Suites properties allow children while the Grande is adults only. My fiance and I are staying at the Grande this year because I just have to have the 'butler' experience plus I thought it would be best to stay there instead of moving over for our honeymoon.
There are plenty of reviews on here from other brides..I highly recommend reviewing the posts. Good luck with your decisions! :-) R~